adolf hitler albert canal allied advance from paris to the rhine antwerp battle for the hague battle of aachen battle of britain battle of dunkirk battle of france battle of hannut battle of maastricht battle of overloon battle of rotterdam battle of zeeland battle of the bulge battle of the grebbeberg battle of the netherlands battle of the scheldt belgium brussels casemate colmar pocket cologne dieppe raid dunkirk end of world war ii in europe fort eben-emael france granite hanna reitsch hauptmann italian invasion of france kurt student low countries luxembourg maastricht maginot line major nazi germany netherlands oberkommando der wehrmacht oberleutnant prisoner of war radar rhineland rotterdam rudolf witzig the hague western allied invasion of germany world war ii zuider zee