From "Infantry Regiments of the US Army" by James Sawicki (Wyvern, 1981), p. 174:
"The 71st Infantry dates from 1850. The regiment served for several short periods during the Civil War, including the Battle of Bull Run and the gathering of troops near Harrisburg to oppose Lee's march into Pennsylvania. It also served in the Santiago Campaign in the War with Spain and on the Mexican border in 1916. During WW I the regiment was in active Federal Service as the the 54th Pioneer Infantry, serving overseas in the Meuse-Argonne operation and the Army of Occupation."
It served in Europe and the Pacific as part of the 44th Infantry Division during WW II (p. 173).
This work by Sawicki contains the full organizational history of the regiment, all its campaign credits and a drawing of its distinctive insignia.
It is not to be confused with the 71st Infantry, Regular Army, organized during WW I and demobilized in 1919.
James B. Ronan II
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