Russian NO Reads:
“Gain 5 IPCs if no other Allied forces are present in a territory controlled by the Soviet Union and if the Soviets control Archangel.”
Page 25 of the Axis and Allies Revised manual states that Anti-Aircraft guns revert to the ownership of the original owner when liberated, thus implying they are that player’s forces.
It is thus my belief, that a British Anti-Aircraft gun in Soviet territories negates the Russian National Objective.
If they did not, it is my belief they would act like Industrial Complexes and, when liberated, revert to who ever owned the land the complex was on, not who first purchased the unit.
The distinction is, if Germany captures an AA Gun (Russian) and moves it to France where it is liberated by the Americans later in the game, the AA Gun is replaced with a Russian gun.
If Russia purchases an Industrial Complex on Poland, losses it to Germany, and the Americans subsequently liberate the complex, it becomes American.