The 27th Infantry Regiment, nicknamed the "Wolfhounds", is a unit of the United States Army established in 1901, that served in the Philippine–American War, in the Siberian Intervention after World War I, and as part of the 25th Infantry Division ("Tropic Lightning") during World War II, the Korean War, and later the Vietnam War. More recently the regiment is currently deployed to Afghanistan for the second time, following two deployments to Iraq. The regimental march is the Wolfhound March.