Black Mug 15oz - Army - 1st Bn 502nd Infantry Regt - Infantry Br wo Txt15oz Height, in 4. 72 Diameter, in 3. 15 The 502nd Infantry Regiment (502nd IR), previously titled the 502nd Parachute Infantry Regiment (502nd PIR), is an infantry regiment of the United States Army. The regiment was established shortly after U. S. entry into World War II, and was assigned as a regiment of the 101st Airborne Division, "The Screaming Eagles", one of the most decorated formations of the U. S. Army. .: Black ceramic .: 15 oz (0. 44 l)