The 73rd Pennsylvania Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 73rd Pennsylvania Infantry was organized at Philadelphia, Pennsylvania beginning in June 1861 and mustered in for a three year enlistment on September 19, 1861 under the command of Colonel John A. Koltes.
The regiment was attached to Steinwehr's Brigade, Blenker's Division, Army of the Potomac, to March 1862. 2nd Brigade, Blenker's Division, II Corps, Army of the Potomac, to April 1862. 2nd Brigade, Blenker's Division, Department of the Mountains, to June 1862. 2nd Brigade, 1st Division, I Corps, Army of Virginia, to September 1862. 1st Brigade, 2nd Division, XI Corps, Army of the Potomac, to October 1863, and Army of the Cumberland to April 1864. 2nd Brigade, 2nd Division, XX Corps, to July 1865.
The 73rd Pennsylvania Infantry mustered out July 14, 1865.
Left Pennsylvania for Washington, D.C., September 24. Duty in the defenses of Washington, D.C., until March 1862. Advance on Manassas, Va., March 10âÂÂ15. Near Catlett's Station, Va., until April 6. Moved to Petersburg, Va., April 6-May 11. Operations in the Shenandoah Valley until June. Battle of Cross Keys June 8. Duty in the Shenandoah Valley and at Sperryville until August. Occupation of Luray July 22. Battle of Cedar Mountain August 9 (reserve). Pope's campaign in northern Virginia August 16-September 2. Fords of the Rappahannock August 21âÂÂ23. Sulphur Springs August 24. Gainesville August 28. Groveton August 30. Bull Run August 30. Duty in the defenses of Washington, D.C., until November. Movement to Centreville November 1âÂÂ19, then to Fredericksburg December 9âÂÂ16. "Mud March" January 20âÂÂ24, 1863. At Stafford Court House until April 27. Operations at Welford's, Kelly's, and Beverly Fords April 14âÂÂ15. 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. Guard duty along Orange & Alexandria Railroad until September. Movement to Bridgeport, Ala., September 24-October 3. Operations in Lookout Valley October 19âÂÂ26. Reopening Tennessee River October 26âÂÂ29. Battle of Wauhatchie, Tenn., October 28âÂÂ29. Chattanooga-Ringgold Campaign November 23âÂÂ27. Battles of Orchard Knob November 23 and Tunnel Hill November 24âÂÂ25. Mostly captured November 25 at Tunnel Hill. Duty in Lookout Valley until May 1864. Atlanta Campaign May 1-September 8. Demonstration on Rocky Faced Ridge May 8âÂÂ11. Dug Gap or Mill Creek May 8. Battle of Resaca May 14âÂÂ15. Near Cassville May 19. New Hope Church May 25. Operations on line of Pumpkin Vine Creek and battles about Dallas, New Hope Church, and Allatoona Hills May 26-June 5. Operations about Marietta and against Kennesaw Mountain June 10-July 2. Pine Hill June 11âÂÂ14. Lost Mountain June 15âÂÂ17. Gilgal or Golgotha Church June 15. Muddy Creek June 17. Noyes Creek June 19. Kolb's Farm June 22. Assault on Kenesaw June 27. Ruff's Station or Smyrna Camp Ground July 4. Chattahoochie River July 5âÂÂ17. Peachtree Creek July 19âÂÂ20. Siege of Atlanta July 22-August 25. Operations at Chattahoochie River Bridge August 26-September 2. Occupation of Atlanta September 2-November 15. Expedition to Tuckum's Cross Roads October 26âÂÂ29. Near Atlanta November 9. March to the sea November 15-December 10. Siege of Savannah December 10âÂÂ21. Carolinas Campaign January to April 1865. Averysboro, N.C., March 16. Battle of Bentonville March 19âÂÂ21. Occupation of Goldsboro March 24. Advance on Raleigh April 9âÂÂ13. Occupation of Raleigh April 14. Bennett's House April 26. Surrender of Johnston and his army. March to Washington, D.C., via Richmond, Va., April 29-May 20. Grand Review of the Armies May 24. Duty in the defenses of Washington until July.
The regiment lost a total of 216 men during service; 5 officers and 98 enlisted men killed or mortally wounded, 113 enlisted men died of disease.