The 145th Pennsylvania Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 145th Pennsylvania Infantry was organized at Erie, Pennsylvania, and mustered in for a three-year enlistment on September 5, 1862, under the command of Colonel Hiram Loomis Brown.
The regiment was attached to 2nd Brigade, 1st Division, II Corps, Army of the Potomac, to October 1862. 1st Brigade, 1st Division, II Corps, to April 1863. 4th Brigade, 1st Division, II Corps, to May 1865.
The 145th Pennsylvania Infantry mustered out of service on May 31, 1865.
Moved to Chambersburg. Pa., September 11âÂÂ12, then to Hagerstown and Antietam, Md., September 15âÂÂ17. Moved to Harpers Ferry, Va., September 22, 1862, and duty there until October 29. Reconnaissance to Charlestown October 16âÂÂ17. Advance up Loudoun Valley and movement to Falmouth, Va., October 29-November 17. Battle of Fredericksburg December 12âÂÂ15. Duty at Falmouth, Va., until April 1863. Chancellorsville Campaign April 27-May 6. Battle of Chancellorsville May 1âÂÂ5. Gettysburg Campaign June 11-July 24. Battle of Gettysburg July 1âÂÂ3. Pursuit of Lee July 5âÂÂ24. Duty on line of the Rappahannock until September. Advance from the Rappahannock to the Rapidan September 13âÂÂ17. Bristoe Campaign October 9âÂÂ22. Auburn and Bristoe October 14. Advance to line of the Rappahannock November 7âÂÂ8. Mine Run Campaign November 26-December 2. At Stevensburg until May 1864. Demonstration on the Rapidan February 6âÂÂ7. Rapidan Campaign May 4-June 12. Battles of the Wilderness May 5âÂÂ7; Corbin's Bridge May 8; Spotsylvania May 8âÂÂ12; Po River May 10; Spotsylvania Court House May 12âÂÂ21. Assault on the Salient May 12. North Anna River May 23âÂÂ26. On line of the Pamunkey May 26âÂÂ28. Totopotomoy May 28âÂÂ31. Cold Harbor June 1âÂÂ12. Before Petersburg June 16âÂÂ18. Siege of Petersburg June 16, 1864, to April 2, 1865. Jerusalem Plank Road June 22âÂÂ23, 1864. Demonstration north of the James at Deep Bottom July 27âÂÂ29. Deep Bottom July 27âÂÂ28. Mine Explosion, Petersburg, July 30 (reserve). Demonstration on north side of the James at Deep Bottom August 13âÂÂ20. Strawberry Plains, Deep Bottom, August 14âÂÂ18. Ream's Station August 25. Reconnaissance to Hatcher's Run December 7âÂÂ10. Dabney's Mills, Hatcher's Run, February 5âÂÂ7, 1865. Watkins' House March 25. Appomattox Campaign March 28-April 9. Skirmishes on line of Hatcher's and Gravelly Runs March 29âÂÂ30. Hatcher's Run or Boydton Road March 31. Crow's House March 31. Sutherland Station April 2. Sailor's Creek April 6. High Bridge, Farmville, April 7. Appomattox Court House April 9. Surrender of Lee and his army. March to Washington, D.C., May 2âÂÂ12. Grand Review of the Armies May 23.
The regiment lost a total of 422 men during service; 18 officers and 187 enlisted men killed or mortally wounded, 3 officers and 214 enlisted men died of disease.