35th Fighter Group (35th FG)
U.S. Army Air Force (USAAF), 5th Air Force (5th AF)

Background
The U.S. Army Air Force (USAAF), 5th Air Force (5th AF), 35th Fighter Group (35th FG) operated in the South West Pacific Area (SWPA) during World War II including the 39th Fighter Squadron (39th FS), 40th Fighter Squadron (40th FS) and 41st Fighter Squadron (41st FS).

39th Fighter Squadron (39th FS) "Cobra In The Clouds"
The 39th Fighter Squadron (39th FS) nicknamed "Cobra In The Clouds" operated the P-39 Airacobra and P-38 Lightning and later the P-47D Thunderbolt and finally the P-51D Mustang until the end of the Pacific War.

40th Fighter Squadron (40th FS) "The Red Devils"
The 40th Fighter Squadron (40th FS) nicknamed "The Red Devils" operated the P-39 Airacobra and later the P-47 Thunderbolt and finally the P-38 Lightning.

41st Fighter Squadron (41st FS) "The Flying Buzzsaws"
The 41st Fighter Squadron (41st FS) nicknamed "The Flying Buzzsaws" operated the P-39 Airacobra and later the P-47D Thunderbolt and finally the P-51D Mustang.

References
Stars & Bars (1995) pages 33 (35th FG, 39th FS), 34 (40th FS, 41st FS)