I think the real cause was something like this- that if you fill a continent with armies and navies and refrain from laughing when your leaders strut around with dead bears and tin pots on their heads sooner or later some particularly stompy individual with waxed moustaches is going to want to see if the armaments he's been sold by Mr Krupp and others actually do what it says on the tin.
Today is the 100th anniversary of Britain's entry into the War. The powers-that-be want us to turn our house lights off at 10.00 this evening in reference to something the particularly incompetent Home Secretary of the day is supposed to have said at the time. Well,they would, wouldn't they? he was one of them: short on the negotiating skills, always ready with a Virgilian one-liner.
And there you see the benefits of a classical education!