German forces fight against Allied forces during their invasion of France as they capture Boulogne and try to capture Calais

WS smoke rising from Boulogne / German soldiers firing artillery piece / WS smoke rising from Boulogne / German soldiers firing artillery piece / German soldier lying on ground manning machine gun / soldiers firing artillery piece / smoke rising from buildings in Boulogne / soldiers firing artillery piece / WS shell exploding in Boulogne / fire burning in street / German tank rolling down street / two shots of French prisoners of war walking along street guarded by German soldiers // WS smoke rising from Calais / pan across cranes along shore of harbor in Calais and smoke rising / German soldiers crouching behind building on corner, pan across to church tower / shot of bridge from quay / shot from land of ship sailing in English Channel / German soldiers behind sandbags looking out at English Channel