503rd Infantry Regiment
Regiment · United States · inactive December 31, 1945 – 1951 · inactive December 31, 1984 – 1986
Fought in Vietnam War Wikipedia
Served with
- October 20, 1944 – August 15, 1945 XI Corps (United States) Under this formation at Philippines campaign (1944–1945) (Wikipedia infobox)
- July 13, 2008 173rd Airborne Brigade Under this formation at Battle of Wanat (Wikipedia infobox)
Movements
- September 1, 1939 – September 2, 1945 World War II
- April 22 – September 16, 1943 Salamaua–Lae campaign
- October 20, 1944 – August 15, 1945 Philippines campaign (1944–1945)
- March 20, 2003 – December 18, 2011 Iraq War
- July 13, 2008 Battle of Wanat
- January 1, 2015 – August 30, 2021 War in Afghanistan (2015–2021)