It's just a catch-all term - if I was being dismissive I would say that it applies to every Russian soldier allowed within 20ft of a map...
There's a bewildering array of units from different organs of state - Airborne units from the Army, Marines from the Navy, and 'crunchy' paramilitary units from SVR, FSB, GRU, OMOM....
If applied in a UK context it would include everyone in 16 Air Assault Bde, everyone in 3 Commando Bde, 21/22/23 SAS, SBS, SRR, Ranger Regiment, and then SIS, MI5 DI and the Home Office all having their own versions of 22SAS.
A squabbling gangfuck.