A couple of others for you Greg F:

During the Passchendale (Sp?) offensive in the First World War the British Government was paying Krupp something like a penny farthing for every shell fired at the german lines by British guns.

In the Second World War SOE was paying the German Gestapo for engine parts to maintain and run "Shetland" Larsen's buses.

Strange circumstances produce strange bed-fellows - for a whole raft of reasons.