Statistics for occurrence #1 of “Harrisburg, Pa.” in chapter 35, regiment PA54 of Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories:

...cher's Run March 29-April 1. Fall of Petersburg April 2. Pursuit of Lee April 3-9. Rice's Station April 9. Regiment captured. Sent to Parole Camp, Annapolis, Md. Mustered out at Harrisburg, Pa. , July 15, 1865. Regiment lost during service 5 Officers and 108 Enlisted men killed and mortally wounded and 2 Officers and 137 Enlisted men by disease. Total 152.
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Harrisburg, Pa. (Pennsylvania, United States) 811 56 189 56 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.