6442山炮和碉堡防守，敌军手榴弹步枪士兵和GrW-34 迫击炮士兵冲锋 Mountain cannons and bu

6442山炮和碉堡防守，敌军手榴弹步枪士兵和GrW-34 迫击炮士兵冲锋 Mountain cannons and bunker defense, enemy troops with grenades, rifle soldiers, and GrW-34 mortar soldiers charging