The 19th Infantry Regiment, known as the "Rock of Chickamauga," was constituted in 1861 and has a distinguished history of service in the United States Army. It fought valiantly in the American Civil War, earning its nickname at the Battle of Chickamauga for its steadfast defense. The regiment later served in the Philippine–American War, World War II—where it participated in campaigns in the Pacific Theater—and the Korean War. Throughout its history, the 19th Infantry has earned numerous campaign streamers and honors for its bravery and dedication to duty.