The 4th Air Group (第四航空隊, Dai-Yon Kōkūtai) was a land-based bomber aircraft unit of the Imperial Japanese Navy Air Service (IJNAS) during the Pacific campaign...

of Fleet Air Arm groups of the Royal Navy, that were either formed or planned. There were two types of groups: there were Carrier Air Groups that administered...

The 4th Fighter Group was an American element of the United States Army Air Forces (USAAF) Eighth Air Force during World War II. The group was known as...

The 4th Air Support Operations Group (4 ASOG) is an active unit of the United States Air Force, assigned to the 435th Air Ground Operations Wing. It is...

1943. These were assigned to squadrons of the 4th Air Group. A total of 15 USAAF pursuit/fighter groups (FG), along with other pursuit/fighter squadrons...

The Mexican Air Force (FAM; Spanish: Fuerza Aérea Mexicana) is the air service branch of the Mexican Armed Forces. It is a component of the Mexican Army...

The 4th Guards Air and Air Defence Forces Army (Russian: 4-я армия ВВС и ПВО) is an air army of the Russian Aerospace Forces, part of the Southern Military...

The 4th Operations Group (4 OG) is the flying component of the 4th Fighter Wing, assigned to the United States Air Force Air Combat Command. The group is...

The 4th Panzer Army (German: 4. Panzerarmee), operating as Panzer Group 4 (Panzergruppe 4) from its formation on 15 February 1941 to 1 January 1942, was...

the 4th Air Group commander, Zheng Shaoyu, caught fire in the air and the pilot was killed. On 3 August 1942 during a training flight the deputy group commander...