I always found it interesting that with the Bren gun and it's parent Czechicon design everyone seemed to be shooting at each other with the same basic design.
The Japaneseicon shot at Brits and Aussies with 7.7X56Rs and the Brits in tanks shot at the Germans with 8X57s.
Of course the Finns stacked up the Ruskies with their own rifles.

In watching post Normandy documentary footage I have seen a Germanicon soldier with a #4Mk1T and in the Italianicon campaign apparently a USGI or an someone dressed in US battle dress was mopping up Italian ruins with a #4Mk1.