4nd Air Defence Division
4-я дивизия ПВО
Military Unit: 03125
Activated 1.3.57 in Belushya Guba, Novaya Zemlya, as the Polyarnyy Air Defence Division.
1.8.60 renamed 4th Air Defence Division.
The 641st Guards Fighter Aviation Regiment PVO joined the division in 9.72, replacing the 991st Fighter Aviation Regiment PVO.