I don't think there were any joint war games, I think the best AH and Germany did was some staff talks.

Also konrad wasn't useless, he was a good tactician but relied on others to tie his ideas together.
 
He might not invade Belgium as but to piss off the still powerful British empire would probably cost him a large amount of men.
He would probably go for a Russia first, as they are the weakest of the two major Entente powers in 1914. Perhaps he simply would do the same thing as OTL, but his superior military genius would outtrump the Brits and the French.

Of course. Just like the french Napoleon who likewise avoided pissing off the British because it wasnt a wise move...
 
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