150th Pennsylvania Infantry Regiment

The 150th Pennsylvania Infantry was a Union Army volunteer regiment during the American Civil War. The first major battle that the 150th was in was Gettysburg, where it held back overwhelming numbers of Confederates for several hours.

Service history
The 150th Pennsylvania Infantry was raised by Colonel Langhorne Wister in Philadelphia and Harrisburg in September 1862, and quickly joined the defences at Washington D.C.. Its Company K, commanded by Captain David Derrickson, was detached and served as bodyguard for President Abraham Lincoln for the duration of the war, including at his stay at the Soldiers' Home. The rest of the regiment joined the Army of the Potomac in February 1863. There it served in the 2nd Brigade, 3rd Division, First Corps.

Going into Gettysburg with 397 men present it saw action on all three days. Colonel Wister assumed brigade command and every field officer was wounded. The regiment lost 53 killed & mortally wounded, 134 wounded and 77 missing. Two soldiers later received the Medal of Honor, Lt. Col. Henry S. Huidekoper and Corporal J. Monroe Reisinger.

In 1864 the 150th was transferred to the Fifth Corps where it was in various brigades, including that of Brig. Gen. Joshua L. Chamberlain. It continued to serve until it was mustered out in June 1865.