British vehicle changes

Ectar: Churchill I: Armour arrangement adjusted to be more accurate (minor changes). FV215b (183): Penetration of HESH Mk.1 shell for 183 mm L4 gun changed from 275mm to 230mm. FV4202: Reload time for 105 mm Royal Ordnance L7A1 gun for FV4202 turret changed from 9.3s to 8.6s.