4th Air and Air Defence Forces Command

The 4th Air and Air Defence Forces Command was a formation of the Russian Air Force. It was formed on 1 December 2009 from the amalgamation of the 4th Air and Air Defence Forces Army and 5th Air and Air Defence Forces Army. The command's headquarters was in Rostov-on-Don, and it was responsible for the air defence of the North Caucasus Military District and the Volga-Urals Military District. The command became the 4th Air and Air Defence Forces Army again on 1 August 2015.
Structure.
It comprised the 7th Brigade of Missile-Space Defence, in the North Caucasus Military District, and the 8th Military Space Defence Brigade in the Volga-Urals Military District. The 7th Brigade of Missile-Space Defence was formed from the 51st Air Defence Corps.
"Combat Aircraft" contradicted themselves between their text and a table regarding the 4th A&AD Command in their June 2010 issue. The text followed the above data drawn from warfare.ru, with the table saying that forces in the Volga-Ural Military District would come under the 3rd Air and Air Defence Force Command in the Siberian Military District.
The 7th Brigade of Missile-Space Defence was the former 51st Air Defence Corps. In 2000 it had 7,500 personnel of which 2,500 were air crew. It also had 164 aircraft (59 Su-27, 105 MiG-29). In December 2007 it received upgraded 3D radars.
Russian military reform blog: