This AAR and the Pelton vs S2Tanker AAR seem to indicate that S2Tanker may be trying to develop a "pull them apart" invasion strategy.
I think the Allied player is better suited leaving the garrison requirements to do that for him and concentrating as much as possible to attack decisively.
The Allies don't have overwhelming numbers of map counters like the Soviets, and I think if they get careless thinning themselves chasing too many objectives they can lose a lot of time overall.