The 517th Parachute Infantry Regiment was an airborne infantry regiment of the United States Army, formed during World War II. At times the regiment was attached to the 17th Airborne Division, 82nd Airborne Division and later, the 13th Airborne Division. During most of their combat, the unit was an independent combined force of 17th Airborne troops called the 517th Parachute Regimental Combat Team or 517th PRCT /517th PCT /517th RCT.