The Army Ranger Knife is a fighting knife that was issued to Army Rangers during World War II. The knife was designed by Colonel Rex Applegate and William Fairbairn, and was based on a British knife that they had used while serving in the Shanghai Municipal Police. The knife was made by several different companies during the war, and was issued with a sheath that could be attached to the belt. After the war, the Army Ranger Knife remained in service with the Rangers, and was also adopted by other military units, including the Navy SEALs. The knife is still in production today, and is available for purchase by the general public.