The rules state that Yugoslavia can be invaded by Italy without a declaration of war on England.
But the rules also state the all Yugoslavian units become British.
In a recent game, the Yugoslavian player opted to place his units in the north west of Yugoslavia, and attack Italian home territories. The Italian player intimated that it was an illegal move to attack Italy, because that was a D.O.W. by England.
Then the question came that can Yugoslavian units, that are now british, attack anything? for example, Yugoslavian territories, And if they can, can those attacks be coordinated with british air support or other elements?
And can Yugoslavia be reinforced with British Units for a proxy war?