When the shooting starts all manner of strange things happen. War brings out the best and the absolute worst in people. The first casualty is the truth.
In murky circumstances, Vickers famously paid Krupps a royalty of 1s 2d per fuse after the Great War and the royalty was charged to the British government rather than paid from profits. Tax free. Another scandal involved large quantities of British cement imported via neutral Holland to make German pill-boxes.
After WW1 the US Government lost a patent infringement case brought against them by Mauser because the Springfield Rifle, ahem, was rather more of a copy than was legal. Rommel's desert war against the British in North Africa was funded by the Greeks. (The forcibly extracted loan had to repaid by Germany, who also honoured National Socialist pension agreements.)
Arguably WW1 was won by the Royal Navy. They applied a strict blockade, which coupled with bad harvests, caused starvation and serious materiel shortages in Germany. Because the war ended with an Armistice rather than a surrender, the blockade was maintained throughout peace negotiations resulting in the RN killing large numbers of civilians after war was over.
There's a sick logic to all this. Needs must when the devil drives.
Dave