Hiya Philip, Moscow camp was known as the "City Sqn" and was the base camp for all the roulement tours for NI, for the RCT and covered the whole of Belfast and surrounding areas, basically "The HQ" elements of our Sqns, it would be found in the Docks of Belfast City, hense the term City Sqn.
The "Country Sqn" were were another Sqn from normally the same Regiment but based in Bandit Country, Armagh, Londonderry etc but mainly the Border areas of NI.
When I was in 26 Sqn RCT the resident RCT Sqn in Lisburn NI, we were always doing undercover ops into bandit country, with resupplies, troop movements etc, we were always in pairs or on our own, a scary prospect but it had to be done, as most people wouldn't expect a squaddy to be on his own in the middle of NI.
Ken
PS
APC = Armoured Personnel Carriers these were always Saracens, and were driven only in the Countryside as they were difficult to manouver in the cities.
Pigs = 1 Ton Humbers these were driver in the Cities, as they were slow and cumbersome.
So City = Pig driver trg & Country = Saracen driver trg