The Seventy-Fifth Pennsylvania Volunteer Infantry Regiment ("75th Pennsylvania") was a unit of the Union Army during the American Civil War. It was composed almost entirely of German-speaking residents of Philadelphia and newly arrived German immigrants. Total enrollment, over the course of the war, was 1,293 officers and men. The 75th Pennsylvania participated in several major battles including Second Bull Run, Chancellorsville, and Gettysburg. The regiment was transferred to the Western Theater in September, 1863. There, it participated in operations in Tennessee, before it was mustered out of service on September 1, 1865, following the close of the war.