The 2nd Mass. Regiment, mustered into service on 25 May 1861 after training at Camp Andrew in West Roxbury, was the first unit composed entirely of volunteers raised in the state.
From left to right, the men are:
J. Parker Whitney (Capt., Co. F), Unidentified, possibly Charles R. Mudge (1st Lt., Co. F), Richard Cary (Capt., Co. G), Robert G. Shaw (1st Lt., Co. F), Thomas R. Robeson (2nd Lt., Co. F), James Francis (2nd Lt., Co. A), Edwin R. Hill (1st Lt., Co. C), Robert B. Brown (2nd Lt., Co. C), Rufus Choate (2nd Lt., Co. I), Richard C. Goodwin (Capt., Co. K), Harrison G.O. Weymouth (1st Lt., Co. A), Samuel M. Quincy (Capt., Co. E), William D. Sedgwick (1st Lt., Co. D)