Globalisation is not new and in both world wars there were multinational companies with plants on both sides and/or with licence/patent agreements with companies on the other side. In WW1 there were quite formal arrangements to deal with this and I wonder if the same rules applied in WW2. In WW1 German Maxim machine guns were built under licence from Vickers Maxim and many British fuses were based on German patents. Similarly Pfalz built aircraft under licence from Morane and some Italian aircraft similarly used Albatross designs. In such cases escrow accounts were opened in Swiss banks and payments made into these. No withdrawals were allowed until the war was over. Companies that had plants on both sides included Daimler and Whitehead In WW2 Dunlop had tyre plants in Britain France and Germany. Indeed they had an exclusive contract to supply the Gestapo with whitewall tyres (not something that featured in post war company literature) and the German factory was pumping out tyres for the German armed forces until the USAAF flattened it on the last Sunday of the war. Daimler was again working on both sides. The escape kit used on British submarines was made using some licensed technology from a German company. Now obviously the plants on either side would have little choice but support the war economy but the answer I'm looking for is how was the finance organised?