The 1st Battalion, Virginia Infantry Regulars, also known as the Irish Battalion, was raised in Virginia for service in the Confederate States Army during the American Civil War and, served as infantry. It fought mostly with the Army of Northern Virginia. It lost twenty-five percent of the 187 engaged at First Manassas, had 3 wounded during the Seven Days' Battles and 3 killed and 19 wounded at Second Manassas. The unit surrendered 18 officers and 120 men. Majors D.B. Bridgford, John D. Munford, and John Seddon were in command.