I'd suggest this scenario is a little pro-British, so for a more competitive scenario, use an alternate special rule
The British forces gain 1 Temporary Victory Medal at the start of their turn for each building hex after the first two (2) occupied. Place a British medal on the hex at the start of the turn. The medal is retained even when the unit exits the building or is eliminated. The medal is removed from the hex when a German unit reoccupies the building.
"Feed the troops on victory"- Gen. Sir John Monash