457th Air Expeditionary Group, provisional United States Air Force unit assigned to the Air Combat Command
•
457th Airlift Squadron (457 AS), part of the 375th Airlift Wing at Andrews Air Force Base, Maryland
•
457th Fighter Squadron, United States Air Force Reserve Command (AFRC) unit, assigned to the 301st Operations Group
The two units were renamed the 457th (Wessex) Heavy Air Defence Regiment, RA (Hampshire Carabiniers Yeomanry), this gave the Regiment the longest title in the army, and took on a new role converting from traditional Anti-Aircraft Guns to using the Thunderbird Anti-Aircraft Missile.
The 457th Bomb Group has a memorial dedicated to the men who lost their lives flying from Glatton in All Saints Church Conington churchyard.