The 503rd Infantry Regiment and the 2nd Infantry Division are both formations of what military branch
503rd Infantry Regiment (United States) The 503rd Infantry Regiment, formerly the 503rd Parachute Infantry Regiment (PIR) and the 503rd Airborne Infantry Regiment (AIR), is an airborne infantry regiment of the United States Army. The regiment served as an independent regiment in the Pacific War during World War II; at Fort Campbell, Kentucky; in Okinawa, Japan; and in Germany. Regimental elements have been assigned to the 2nd Infantry Division, the 11th Airborne Division, the 24th Infantry Division, the 82nd Airborne Division, and the 173rd Airborne Brigade Combat Team. Regimental elements have participated in campaigns in the Vietnam War, Operation Enduring Freedom–Afghanistan, and Operation Iraqi Freedom. The regiment claims 15 Medal of Honor recipients: two from World War II, 10 from Vietnam, and three from Afghanistan. A parent regiment under the U.S. Army Regimental System. The regiment's 1st and 2nd Battalions are active, assigned to the 173rd Airborne Brigade, based at Caserma Ederle, Vicenza, Italy.
2nd Legions Home Army Infantry Division The 2nd Legions Home Army Infantry Division “Pogon” (Polish: 2 Dywizja Piechoty Legionow AK "Pogon", 2 DP Leg. AK) was a unit of the Polish Home Army (AK), created in 1944 in the Home Army District Radom - Kielce. Creation of the division was based on a September 1942 order of the AK headquarters, which stated that in the future Operation Tempest, the Home Army units were to be named after pre-September 1939 units of the Polish Army. Therefore, the Second Legions Home Army Infantry Division was based on and named after the 2nd Legions Infantry Division, which until the Invasion of Poland had its headquarters in Kielce.