Stationed at Fort Leavenworth, Kansas Territory, January 1, 1861. Moved to Washington, DC, January 7-13, 1861. Moved to Fort Hamilton, NY, April 4-5. Expedition to relief of Fort Pickens, FL, April 8-21. Return to Washington. Attached to Blenker's Brigade, Miles' Division, McDowell's Army of Northeast Virginia, June to August 1861. Heintzelman's Brigade, Division of the Potomac, to October 1861. Blenker's Brigade, Division of the Potomac, to October 1861. Artillery Reserve, Army of the Potomac, to May 1862. 1st Brigade, Horse Artillery, Artillery Reserve, 5th Army Corps, Army of the Potomac, to September 1862. Artillery, Cavalry Division, Army of the Potomac, to February 1863. Artillery Reserve, attached to 2nd Division, Cavalry Corps, Army of the Potomac, to June 1863. 2nd Brigade, Horse Artillery, attached to 2nd Division, Cavalry Corps, Army of the Potomac, to May 1865. Department of Washington, 22nd Corps.

SERVICE.--Advance on Manassas, Va., July 16-21, 1861. Battle of Bull Run July 21. Duty in the Defenses of Washington, D.C., until March, 1862. Moved to the Virginia Peninsula. Siege of Yorktown April 5-May 4. Near Williamsburg May 4. Mechanicsville May 23-24. Seven days before Richmond June 25-July 1. Mechanicsville June 26. Gaines' Mill June 27. Malvern Hill July 1. At Harrison's Landing until August 16. Cog's Point July 31-August 1. Moved to Fortress Monroe, thence to Alexandria August 16-24. Maryland Campaign September 6-22. Sugar Loaf Mountain September 11-12. Boonsborough September 15. Battle of Antietam September 16-17. Shepherdstown Ford September 19. Upperville and Bloomfield November 2-3. Snicker's Gap November 3-4. Markham Station November 4. Amissville November 10. Battle of Fredericksburg, Va., December 12-15. Operations at Rappahannock Bridge and Grove Church February 5-7, 1863. Stoneman's Raid April 29-May 8. Battle of Gettysburg July 1-3. Emmettsburg, Md., July 4. Williamsport and Hagerstown July 6. Boonsborough July 8. Old Antietam Forge July 10. Falling Waters July 14. Chester Gap July 21-22. Advance from the Rappahannock to the Rapidan September 13-17. Culpeper Court House September 13. Raccoon Ford September 14-16. Bristoe Campaign October 9-22. Groveton October 17-18. Gainesville and Buckland Mills October 19. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. New Hope Church November 27. Demonstration on the Rapidan February 6-7, 1864. Barnett's Ford February 6-7. Rapidan Campaign May 4-June 12. Wilderness May 5-7. Spotsylvania Court House May 8-21. Cold Harbor June 1-7. Gaines' Mill, Salem Church and Haw's Shop June 2. Sheridan's Trevillian Raid June 7-24. Trevillian Station June 11-12. Black Creek or Tunstall Station and White House or St. Peter's Church June 21. St. Mary's Church June 24. Siege operations against Petersburg and Richmond June 29, 1864, to April 2, 1865. Lee's Mills July 12, 1864. Demonstration north ½ of the James River July 27-29. Deep Bottom July 27-28. Malvern Hill July 29. Lee's Mills July 30. Demonstration north of the James August 13-20. Gravel Hill August 14. Deep Run August 16. Strawberry Plains August 16-18. Dinwiddie Road, near Ream's Station, August 23. Ream's Station August 23-25. Poplar Grove Church September 29-October 2. Arthur's Swamp September 30-October 1. Boydton Plank Road October 27-28. Reconnaissance toward Stony Creek November 7. Stony Creek Station December 1. Warren's Expedition to Weldon Railroad December 7-12. Dabney's Mills, Hatcher's Run, February 5-7, 1865. Appomattox Campaign March 28-April 9. Dinwiddie Court House March 30-31. Five Forks April 1. Namozine Church April 3. Payne's Cross Roads April 5. Amelia Springs April 5. Sailor's Creek April 6. Appomattox Station April 8. Appomattox Court House April 9. Surrender of Lee and his army. Expedition to Danville April 23-29. Moved to Washington, D.C. Grand Review May 23. Duty at Washington, D.C.

Battery B, 2^nd U.S. Field Artillery

Stationed at Fortress Monroe, VA, January 1, 1861. Attached to Department of Virginia, April 1861, to September 1861. Artillery Reserve, Army of the Potomac, to May 1862. Consolidated with Battery L, 2^nd U.S. Field Artillery, May 1862, and attached to 1st Brigade, Horse Artillery, Artillery Reserve, 5th Army Corps, Army of the Potomac, to September 1862. Pleasanton's Cavalry Division, Army of the Potomac, to November 1862. Averill's Cavalry Brigade, Right Grand Division, Army of the Potomac, to February 1863. 1st Division, Cavalry Corps, Army of the Potomac, to June 1863. 1st Brigade, Horse Artillery, Army of the Potomac and Shenandoah, to December 1864. Reserve Artillery, Middle Military Division, to April 1865. Horse Artillery Brigade, 22nd Corps, to August 1865.

SERVICE.--Action at Big Bethel, Va., June 10, 1861. Capture of Forts Hatteras and Clark, Hatteras Inlet, N. C., August 28-29. Moved to Washington, D.C., September, and duty there until March, 1862. Moved to the Virginia Peninsula. Siege of Yorktown April 5-May 4. Near Williamsburg May 4. Sistersville, New Kent Court House, May 9. Seven days before Richmond June 25-July 1. Turkey Bridge June 30. Malvern Hill July 1. At Harrison's Landing until August 16. Moved to Fortress Monroe, thence to Alexandria August 16-24. Maryland Campaign September 6-22. Sugar Loaf Mountain September 10-11. Frederick, Md., September 12. Catoctin Mountain September 13. Battle of Antietam September 16-17. Shepherdstown Ford September 19. Markham Station November 4. Warrenton November 6. Battle of Fredericksburg, Va., December 12-15. Chancellorsville Campaign April 27-May 8. Stoneman's Raid April 29-May 8. Brandy Station or Fleetwood and Beverly Ford June 9. Gettysburg, Pa., July 1-3. Brandy Station August 1-4. Advance from the Rappahannock to the Rapidan September 13-17. Bristoe Campaign October 9-22. Raccoon Ford October 10. Morton's Ford, Stevensburg, and Kelly's Ford October 11. Brandy Station or Fleetwood October 11-12. Oak Hill October 15. Advance to line of the Rappahannock November 7-9. Mine Run Campaign November 26-December 2. New Hope Church November 27. Rapidan Campaign May 4-June 12. Wilderness May 5-7. Brock Road and the Furnaces May 6. Todd's Tavern May 7-8. Sheridan's Raid to the James River May 9-24. Ground Squirrel Church and Yellow Tavern May 11. Brook Church or Richmond fortifications May 12. On line of the Pamunkey May 26-28. Hanovertown May 27. Crump's Creek and Haw's Shop May 28. Totopotomoy May 28-31. Cold Harbor June 1-7. Siege of Petersburg June 16-August 5. Deep Bottom July 27-29. Sheridan's Shenandoah Valley Campaign August 7-November 28. Tell Gate, near White Post, and near Newtown August 11. Cedarville, Guard Hill or Front Royal August 16. Battle of Opequan, Winchester, September 19. Near Cedarville September 20. Front Royal September 21. Milford September 22. Waynesboro September 29. Tom's Brook October 8-9. Battle of Cedar Creek October 19. Expedition to Lacey Springs December 19-22. Duty in the Shenandoah Valley until April, 1865, and at Washington, D.C., until August, 1865.

Battery C, 2^nd U.S. Field Artillery

Stationed at Fort Independence, MA, January 1, 1861. Moved to Fort Jefferson, Dry Tortugas, FL, January 10-18, 1861, and duty there until September 1861. At Fort Pickens, FL, until May 1862. Attached to District of Fort Pickens, FL, Department of the South, to May 1862. District of Pensacola, FL, Department of the South, to September 1862. New Orleans, LA, Department of the Gulf, to December 1862. Grover's Division, Department of the Gulf, to January 1863. Artillery, 4th Division, 19th Army Corps, Department of the Gulf, to December 1863. District of Baton Rouge, LA, Department of the Gulf, to February 1864. Artillery, 2nd Division, 19th Army Corps, to July 1864. Defenses of Washington, DC, 22nd Army Corps, to August 1865.

SERVICE.--Action on Santa Rosa Island, Fla., October 9, 1861. Engagement with Confederate Batteries at Barrancas November 22-23. Bombardment of Forts McRae and Barrancas, Pensacola Harbor, January 1, 1862. Moved to Pensacola May 13, and duty there until September. Moved to New Orleans, La., thence to Baton Rouge December, and duty there until March, 1863. Operations against Port Hudson March 7-27. Operations in Western Louisiana April 9-May 14. Teche Campaign April 11-20. Fort Bisland April 12-13. Irish Bend April 14. Bayou Vermillion April 17. Advance on Port Hudson May 12-24. Siege of Port Hudson May 24-July 9. Assaults on Port Hudson May 27 and June 14. Surrender of Port Hudson July 9. Moved to Baton Rouge, La., and duty there until March, 1864. Red River Campaign March to May. At Alexandria, La. Retreat to Morganza May 13-20. Moved to Washington, D.C., July, 1864, and duty there until August, 1865. Consolidated with Battery E, 2^nd U.S. Field Artillery, August 24, 1864.

Battery D, 2^nd U.S. Field Artillery

Stationed at Fayetteville Arsenal, NC, January 1, 1861. Attached to Wilcox's Brigade, Heintzelman's Division, McDowell's Army of Northeast Virginia, June to August 1861. Kearney's Brigade, Division of the Potomac, to October 1861. Artillery, Franklin's Division, Army of the Potomac, to March 1862. Artillery, 1st Division, 1st Army Corps, Army of the Potomac and Department of the Rappahannock, to May 1862. Artillery, 1st Division, 6th Army Corps, Army of the Potomac, to May 1863. Artillery Brigade, 6th Army Corps, to July 1863. 1st Brigade, Horse Artillery, Army of the Potomac, to August 1864. Horse Artillery, Army of the Shenandoah, Middle Military Division, to December 1864. Reserve Horse Artillery, Army of the Shenandoah, to April 1865. Horse Artillery, Defenses of Washington, DC, 22nd Army Corps, to October 1865.

SERVICE.--Advance on Manassas, Va., July 16-21, 1861. Battle of Bull Run July 21. Duty in the Defenses of Washington, D.C., until March, 1862. Advance on Manassas, Va., March 10-15. Advance to Falmouth, Va., April 9-19. Moved to the Virginia Peninsula. Peninsula Campaign May to August. West Point May 7. Seven days before Richmond June 25-July 1. Glendale June 30. Malvern Hill July 1. At Harrison's Landing until August 16. Moved to Alexandria August 16-24. Maryland Campaign September 6-22. Crampton's Pass, South Mountain, Md., September 14. Battle of Antietam September 16-17. Movement to Falmouth, Va., October 30-November 19. Battle of Fredericksburg, Va., December 12-15. At Falmouth until April, 1863. Chancellorsville Campaign April 27-May 6. Operations at Franklin's Crossing April 29-May 2. Battle of Maryes Heights, Fredericksburg, May 3. Salem Heights May 3-4. Battle of Gettysburg, Pa., July 2-4. Advance from the Rappahannock to the Rapidan September 13-17. Culpeper Court House September 13. Raccoon Ford September 14-16. Reconnaissance across the Rapidan September 21-23. Bristoe Campaign October 9-22. Raccoon Ford and Morton's Ford October 10. Morton's Ford, Stevensburg, and near Kelly's Ford October 11. Brandy Station or Fleetwood October 11-12. Oak Hill October 15. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. Rapidan Campaign May 4-June 12, 1864. Wilderness May 5-7. Todd's Tavern May 7-8. Sheridan's Raid to the James River May 9-24. Ground Squirrel Church and Yellow Tavern May 11. On line of the Pamunkey May 26-28. Haw's Shop May 28. Totopotomoy May 28-31. Cold Harbor June 1-7. Sheridan's Trevillian Raid June 7-24. Trevillian Station June 11-12. Black Creek or Tunstall Station and White Horse or St. Peter's Church June 21. Siege of Petersburg June 29-August 2. Deep Bottom July 27-28. Malvern Hill July 28. Sheridan's Shenandoah Valley Campaign August 7-November 28. Tell Gate, near White Post, and near Newtown August 11. Near Kearneysville August 25. Leetown and Smithfield, W. Va., August 28. Smithfield Crossing, Opequan, August 29. Sevier's Ford', Opequan, September 15. Battle of Opequan September 19. Fisher's Hill September 21. Milford September 22. Tom's Brook October 8-9. Duty at Winchester and in the Shenandoah Valley until December, and at Pleasant Valley, Md., until April, 1865. At Washington, D.C., until October, 1865.

Battery E, 2^nd U.S. Field Artillery

Stationed at Augusta Arsenal, GA, January 1, 1861. Moved to Washington, DC, February 1-7. Attached to Schenck's Brigade, Tyler's Division, McDowell's Army, Northeast Virginia, June to August 1861. Artillery Division, Army of the Potomac, to October 1861. Porter's Division, Army of the Potomac, to March 1862. Artillery Reserve, Army of the Potomac, to May 1862. 5th Brigade, Artillery Reserve, 5th Army Corps, Army of the Potomac, to September 1862. Artillery, 1st Division, 9th Army Corps, to December 1862. Artillery, 3rd Division, 9th Army Corps, to February 1863. Artillery, 1st Division, 9th Army Corps, Army of the Potomac, to April 1863. District of Central Kentucky, Department of the Ohio, to June 1863 Artillery Reserve, 9th Army Corps, Department of the Ohio, to August 1863. Artillery, 1st Division, 9th Army Corps, Department of the Ohio, to March 1864. Reserve Artillery, 9th Army Corps, Army of the Potomac, to June 1864. Camp Barry, Washington, DC, 22nd Army Corps, to November 1864. Consolidated with Battery C, 2^nd U.S. Field Artillery, August 24, 1864. 1st Separate Brigade, 22nd Army Corps, November 1864, to October 1865.

SERVICE.--Advance on Manassas, Va., July 16-21, 1861. Occupation of Fairfax Court House July 17. Battle of Bull Run July 21. Duty in the Defenses of Washington until March, 1862. Moved to the Virginia Peninsula. Siege of Yorktown April 5-May 4. Near Williamsburg May 4. Seven days before Richmond June 25-July 1. Turkey Bridge June 30. Malvern Hill July 1. At Harrison's Landing until August 16. Movement to Centreville, Va., August 16-28. Battle of Groveton August 29. Battle of Bull Run August 30. Chantilly September 1. Maryland Campaign September 6-22. Battle of Antietam September 16-17. Warrenton or Sulphur Springs November 15. Battle of Fredericksburg, Va., December 12-15. "Mud March" January 20-24. Moved to Newport News February 10, and duty there until March 19. Movement to Kentucky March 19-23. Duty in District of Central Kentucky until June. Moved to Vicks burg, Miss., June 7-14. Siege of Vicksburg June 14-July 4. Advance on Jackson, Miss., July 4-10. Siege of Jackson July 10-17. Moved to Covington, thence to Crab Orchard, Ky., August 4-18. March to Knoxville, Tenn., September 10-26. Knoxville Campaign November 4-December 23. Action at Campbell's Station November 16. Siege of Knoxville November 17-December 5. Repulse of Longstreet's assault on Fort Saunders November 29. Operations in East Tennessee until March, 1864. Ordered to Annapolis, Md. Rapidan (Va.) Campaign May 4-June 7. Wilderness May 5-7. Spotsylvania May 8-21. Totopotomoy May 28-31. Cold Harbor June 1-7. Bethesda Church June 1-3. Ordered to Washington, D. C., and duty in the Defenses of that city until October 1865.

Battery F, 2^nd U.S. Field Artillery

Stationed at Little Rock Arsenal, AR, January 1, 1861. Moved to Jefferson Barracks, St. Louis, MO, February 8-22, 1861. Attached to Army of the West and Department of Missouri to February, 1862. Artillery Division, Army of Mississippi, to April 1862. Artillery, 2nd Division, Army of Mississippi, to November 1862. Artillery, 8th Division, Left Wing, 13th Army Corps, Department of Tennessee, to December 1862. 1st Brigade, 8th Division, 16th Army Corps, Army of Tennessee, to March 1863. Artillery, 2nd Division, District of Corinth, MS, 16th Army Corps, to May 1863. 3rd Brigade, District of Memphis, TN, 5th Division, 16th Army Corps, to November 1863. Fuller's Brigade, 2nd Division, 16th Army Corps, to January 1864. Artillery, 4th Division, 16th Army Corps, to September 1864. Artillery, 1st Division, 17th Army Corps, to November 1864. Artillery, District of Nashville, TN, Department of the Cumberland, to August 1865.

SERVICE.--Expedition from St. Louis, Mo., to Booneville, Mo., June 13-17, 1861. Capture of Jefferson City June 14. Booneville June 17. Expedition from Springfield to Forsyth July 20-25. Forsyth July 22. Battle of Wilson's Creek August 10. Moved to Commerce, Mo., February, 1862. Operations against New Madrid, Mo., and Island No. 10, Mississippi River, February 28-April 8. Moved to Hamburg Landing, Tenn., April 18-23. Advance on and siege of Corinth, Miss., April 29-May 30. Reconnaissance toward Corinth May 8. Pursuit to Booneville May 30-June 12. Duty at Corinth until September. Battle of Iuka September 19. Battle of Corinth October 3-4. Pursuit to Hatchie River October 5-12. Grant's Central Mississippi Campaign. Operations on the Mississippi Central Railroad November 2, 1862, to January 10, 1863. Duty at Corinth, Miss., until May, 1863, and at Memphis, Tenn., until October. Movement to Prospect, Tenn., October 18-November 13. Duty there and at Decatur, Ala., until April, 1864. Atlanta (Ga.) Campaign May 1 to September 8. Demonstrations on Resaca May 8-13. Battle of Resaca May 13, 14 and 15. Battles about Dallas, New Hope Church and Allatoona Hills May 25-June 5. Operations about Marietta and against Kenesaw Mountain June 9-July 2. Assault on Kenesaw June 27. Nickajack Creek July 2-5. Ruff's Mills July 3-4. Chattahoochie River July 5-17. Battle of Atlanta July 22. Siege of Atlanta July 22-August 25. Ezra Chapel July 28. Flank movement on Jonesboro August 25-30. Battle of Jonesboro August 31-September 1. Lovejoy Station September 2-6. Operations against Hood in North Georgia and North Alabama September 29-November 3. Ordered to Nashville, Tenn. Duty at Nashville, Tenn., Bridgeport, Ala., and Chattanooga, Tenn., until August, 1865.

Battery G, 2^nd U.S. Field Artillery

Stationed at Fort Mackinac, MI, January 1, 1861.  Moved to Washington, DC, May 1861. Attached to Davies' Brigade, Miles' Division, McDowell's Army, Northeast Virginia, June to August 1861. Kearney's Brigade, Division of the Potomac, to October 1861. Artillery, Franklin's Division, Army of the Potomac, to January 1862. Artillery, Heintzelman's Division, Army of the Potomac, to March 1862. Artillery, 3rd Division, 3rd Army Corps, Army of the Potomac, to August 1862. Artillery, 1st Division, 4th Army Corps, Army of the Potomac, to September 1862. Artillery, 3rd Division, 6th Army Corps, Army of the Potomac, to May 1863. Artillery Brigade, 6th Army Corps, to August 1863. 2nd Brigade, Horse Artillery, Army of the Potomac, to June 1864. 1st Brigade, DeRussy's Division, 22nd Army Corps, Defenses of Washington, DC, south of the Potomac, to August 1865.

SERVICE.--Advance on Manassas, Va., July 16-21, 1861. Near Fairfax Court House July 17. Battle of Bull Run July 21. Duty in the Defenses of Washington until March, 1862. Moved to Virginia Peninsula. Siege of Yorktown April 5-May 4. Near Williamsburg May 4. Battle of Williamsburg May 5. Battle of Fair Oaks, Seven Pines, May 31-June 1. Seven days before Richmond June 25-July 1. Oak Grove June 25. Glendale June 30. Malvern Hill July 1. At Harrison's Landing until August 16. Moved to Alexandria, Va., August 16-24. Maryland Campaign September 6-22. Battle of Antietam September 16-17. Movement to Falmouth, Va., October 30-November 19. Battle of Fredericksburg, Va., December 12-15. "Mud March" January 20-24, 1863. At Falmouth until April. Chancellorsville Campaign April 27-May 6. Operations at Franklin's Crossing April 29-May 2. Battle of Maryes Heights, Fredericksburg, May 3. Salem Heights May 3-4. Battle of Gettysburg, Pa., July 1-3. Advance from the Rappahannock to the Rapidan September 13-17. Culpeper-Court House September 13. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. New Hope Church November 27. Demonstration on the Rapidan February 6-7, 1864. Barnett's Ford February 6-7. Rapidan Campaign May 4-June 2. Wilderness May 5-7. Spotsylvania Court House May 8-21. North Anna River May 23-26. On line of the Pamunkey May 26-28. Totopotomoy May 28-31. Cold Harbor May 31-June 2. Dismounted June 2 and ordered to Washington, D.C. Duty in the Defenses of that city until August, 1865.

Battery H, 2^nd U.S. Field Artillery

Stationed at Fort Leavenworth, Kansas Territory, January 1, 1861. Moved to Fort McHenry, MD, January 7-12, 1861. Moved to Washington, DC, February 1. Moved to Fort Hamilton, NY, April 4-5. Expedition to relief of Fort Pickens, FL, April 8-21. Duty at Fort Pickens and Barrancas, FL, District of Pensacola, FL, until May 1864. Action on Santa Rosa Island October 9, 1861. Engagement with Confederate Batteries at Pensacola, November 22-23, 1861. Bombardment of Forts McRae and Barrancas, Pensacola Harbor, January 1, 1862. Moved to Baltimore, MD, May 1864, and garrison duty at Fort McHenry until August 1865.

Battery I, 2^nd U.S. Field Artillery

Stationed at Fort Randall, Nebraska Territory, January 1, 1861.  Moved to Fort McHenry, Baltimore, MD, April 13-18, 1861. Attached to Dix's Command, Baltimore, MD, June 1861 to July 1862. Defenses of Baltimore, MD, 8th Army Corps, Middle Department, to January 1863. 1st Separate Brigade, 8th Army Corps, to May 1864. 2nd Brigade, Haskins' Division, 22nd Army Corps, Defenses of Washington, DC, north of the Potomac, to July 1864. 1st Brigade, Hardin's Division, 22nd Army Corps, to November 1864. Fort Foote, Defenses north of the Potomac, 22nd Army Corps, to April 1865. Department of the Cumberland to August 1865. Middle Department to August 1865.

SERVICE.--On garrison duty at Fort McHenry, Baltimore, MD, until May 1864, and in the Defenses of Washington, DC, until April 1865. Moved to Alabama as Infantry April 1865; to Chattanooga, TN, June 1865, and to Fort McHenry, Baltimore, MD, August 1865.

Battery K, 2^nd U.S. Field Artillery

Stationed at Plattsburg Barracks, NY, January 1, 1861.  Moved to Fort Hamilton, NY, January 21-22.  Moved to Fort McHenry, MD, January 29-30.  Moved to Washington, DC, February 1. Moved to Fort Lafayette, NY, April 4-5.  Ordered to Fort Pickens, FL, April 8-20. Attached to District of Pensacola, FL, Department of the South, to August 1862. District of West Florida, Department of the Gulf, to May 1864. New York, Department of the East, to August 1864. Defenses of Baltimore, MD, 8th Corps, Middle Department, to August 1865.

SERVICE.---Garrison duty at Fort Pickens, FL, until May 1864. Engagement with Confederate Batteries at Pensacola, November 22-23, 1861. Bombardment of Forts McRae and Barrancas, Pensacola Harbor, January 1, 1862. Moved to Fort Hamilton, NY, May 1864, and to Fort McHenry, Baltimore, MD, August 1864. Duty at Fort McHenry and at Federal Hill until August 1865.

Battery L, 2^nd U.S. Field Artillery

Stationed at Fortress Monroe, VA, January 1, 1861. Attached to Department of Virginia to September 1861. Artillery Reserve, Army of the Potomac, to May 1862. Consolidated with Battery B, 2^nd U.S. Field Artillery, May 1862, and attached to 1st Brigade, Horse Artillery, Artillery Reserve, 5th Army Corps, Army of the Potomac, to September 1862. Artillery, Pleasanton's Cavalry Division, Army of the Potomac, to November 1862. Averill's Cavalry Brigade, Right Grand Division, Army of the Potomac, to February 1863. 1st Division, Cavalry Corps, Army of the Potomac, to June 1863. 1st Brigade, Horse Artillery, Army of the Potomac, to August 1864. Horse Artillery, Army of the Shenandoah, Middle Military Division, to December 1864. Reserve Horse Artillery, Army of the Shenandoah, to April 1865. Horse Artillery Brigade, 22nd Army Corps, to August 1865.

SERVICE.--Duty at Fortress Monroe, Va., until September, 1861. Ordered to Washington, D.C., and duty there until March, 1862. Ordered to the Virginia Peninsula. Peninsula Campaign April to August. Seven days before Richmond June 25-July 1. Turkey Bridge June 30. Malvern Hill July 1. At Harrison's Landing until August 16. Moved to Fortress Monroe, thence to Alexandria August 16-24. Maryland Campaign September 7-22. Sugar Loaf Mountain September 10-11. Frederick September 12. Catoctin Mountain September 13. Battle of Antietam September 16-17. Shepherdstown Ford September 19. Markham Station November 4. Warrenton November 6. Battle of Fredericksburg December 12-15. Chancellorsville Campaign April 27-May 8. Stoneman's Raid April 29-May 6. Brandy Station or Fleetwood and Beverly Ford June 9. Battle of Gettysburg, Pa., July 1-3. Brandy Station August 1-4. Advance from the Rappahannock to the Rapidan September 13-17. Bristoe Campaign October 9-22. Raccoon Ford October 10. Morton's Ford, Stevensburg, and Kelly's Ford October 11. Brandy Station or Fleetwood October 11-12. Oak Hill October 15. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. New Hope Church November 27. Rapidan Campaign May 4-June 12, 1864. Wilderness May 5-7. Brock Road and the Furnaces May 6. Todd's Tavern May 7-8. Sheridan's Raid to the James River May 9-24. Ground Squirrel Church and Yellow Tavern May 11. Brook Church, Fortifications of Richmond, May 12. On line of the Pamunkey May 26-28. Hanovertown May 27. Crump's Creek and Haw's Shop May 28. Totopotomoy May 28-31. Cold Harbor June 1-7. Siege of Petersburg June 16-August 5. Sheridan's Shenandoah Valley Campaign August 7-November 28. Toll Gate, near White Post, and near Newtown August 11. Cedarville, Guard Hill or Front Royal August 16. Battle of Opequan, Winchester, September 19. Near Cedarville September 20. Front Royal September 21. Milford September 22. Waynesboro September 29. Tom's Brook October 8-9. Battle of Cedar Creek October 19. Expedition to Lacey Springs December 19-22. Duty in the Shenandoah Valley until April, 1865, and at Washington, D.C., until August. Moved to Fort McHenry, Baltimore, Md., August, 1865.

Battery M, 2^nd U.S. Light Artillery

Stationed at Fort Brown, TX, January 1, 1861. Moved to Fort Hamilton, NY, March 13-30, 1861; thence to Fort Pickens, FL, April 6-17. Ordered to Washington, DC, June 1861. Attached to Richardson's Brigade, Tyler's Division, McDowell's Army, Northeast Virginia, to August 1861. Franklin's Brigade, Division of the Potomac, to October 1861. Franklin's Division, Army of the Potomac, to March 1862. Artillery Reserve, Army of the Potomac, to May 1862. 1st Brigade, Horse Artillery, Artillery Reserve, 5th Army Corps, Army of the Potomac, to September 1862. Artillery, Pleasanton's Cavalry Division, Army of the Potomac, to February 1863. Reserve Brigade, 1st Division, Cavalry Corps, Army of the Potomac, to June 1863. 1st Brigade, Horse Artillery, Army of the Potomac, to August 1864. Horse Artillery, Army of the Shenandoah, Middle Military Division, to December, 1864. Reserve Horse Artillery, Army of the Shenandoah, to April 1865. Horse Artillery Brigade, 22nd Army Corps, to August 1865.

SERVICE.--Advance on Manassas, Va., July 16-21, 1861. Occupation of Fairfax Court House July 17. Battle of Bull Run July 21. Duty in the Defenses of Washington, D.C., until March, 1862. Moved to the Virginia Peninsula. Siege of Yorktown April 5-May 4. Near Williamsburg May 4. Hanover Court House May 27. Operations about Hanover Court House May 27-29. Seven days before Richmond June 25-July 1. Malvern Hill July 1. At Harrison's Landing until August 16. Action at Malvern Hill August 5. Moved to Fortress Monroe, thence to Alexandria August 16-23. Maryland Campaign September 6-22. Poolesville, Md., September 7. Barnesville September 9. Monocacy Church September 9. Sugar Loaf Mountain September 10-11. Frederick September 12. Catoctin Mountain September 13. Antietam September 16-17. Shepherdstown Ford September 19. Shepherdstown and Martinsburg October 1. Pursuit of Stuart into Pennsylvania October 9-12. Mouth of Monocacy and White's Ford October 12. Philomont November 1. Union, Bloomfield and Upperville November 2-3. Barbee's Cross Roads November 5. Waterloo Bridge November 7. Corbin's Cross Roads, near Amissville, November 10. Battle of Fredericksburg December 12-15. Chancellorsville Campaign April 27-May 6. Stevensburg May 9. Brandy Station or Fleetwood and Beverly Ford June 9. Upperville June 21. Hanover, Pa., June 30. Gettysburg, Pa., July 1-3. Hunterstown July 2. Smithburg July 5. Williamsport and Hagerstown July 6. Boonsboro July 8. Hagerstown July 12-13. Williamsport and Falling Waters July 14. Advance to the Rapidan September 13-17. Reconnaissance across the Rapidan September 21-23. Bristoe Campaign October 9-22. James City October 10. Bethesda Church and near Culpeper October 10. Morton's Ford October 11. Near Warrenton, White Sulphur Springs, November 11. Brandy Station October 11. Groveton October 17-18. Gainesville, Buckland's Mills and Catlett's Station October 19. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. Morton's Ford November 26. Rapidan Campaign May 4-June 12, 1864. Todd's Tavern May 5-6. Wilderness May 6-7. Alsop's Farm May 8. Sheridan's Raid to the James River May 9-24. Beaver Dam Station May 9-10. Ground Squirrel Church and Yellow Tavern May 11. Brook Church or Richmond fortifications May 12. On line of the Pamunkey May 26-28. Demonstration on Little River May 27. Hanovertown May 27. Haw's Shop May 28. Totopotomoy May 28-31. Cold Harbor June 1-7. Sheridan's Trevillian Raid June 7-24. Trevillian Station June 11-12. Mallory's Cross Roads June 12. Black Creek or Tunstall Station and White House or St. Peter's Church June 21. Siege of Petersburg June 29-August 5. Sheridan's Shenandoah Valley Campaign August 7-November 28. Winchester August 17. Near Kearneysville August 25. Abraham's Creek, near Winchester, September 18. Battle of Opequan, Winchester, September 19. Near Cedarville September 20. Front Royal September 21. Milford September 22. Waynesboro September 29. Tom's Brook October 8-9. Expedition to Lacey's Springs December 19-22. Sheridan's Expedition from Winchester February 27-March 25, 1865. Occupation of Staunton and action at Waynesboro March 2. Appomattox Campaign March 28-April 12. Dinwiddie Court House March 30-31. Five Forks April 1. Moved to Washington, D.C., and duty there until August. Moved to Fort McHenry, Baltimore, Md.

The 2^nd U.S. Field Artillery Regiment lost during service 5 Officers and 50 Enlisted men killed and mortally wounded and 1 Officer and 118 Enlisted men by disease. Total 174.