German forces attack Allied forces while invading France during World War II

Close shot of street sign "Valenciennes" / pan across demolished and damaged buildings in Valenciennes / damaged railroad station in Cambrai / shot inside damaged station / German armored vehicle pulling artillery piece with German soldiers on it driving down street / German soldiers riding horses pulling artillery pieces past damaged house / soldiers firing artillery piece / soldiers manning artillery piece, soldiers in background walking across field next to buildings / two shots of soldiers firing mortar / three shots of soldier firing rifle / smoke pouring from windows of building / soldiers running forward along street / soldiers in Arras running along sidewalk and taking cover / two shots of shells exploding / three shots of German tanks moving forwards / tanks moving forward across field with soldiers running along behind them / Note: exact day not known