The "Gibraltar Brigade" was a famed infantry brigade within the Army of the Potomac during the American Civil War. Noted for its tenacity in combat, the brigade drew its nickname from the steadfastness of the Rock of Gibraltar. It served in many of the leading battles of the Eastern Theater, including key actions during the Battle of Gettysburg in July 1863 when elements of the brigade counter-attacked Confederates from North Carolina and the Louisiana Tigers on Cemetery Hill. Another portion of the brigade helped repulse Pickett's Charge the following day.