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As for WW I and WW II, Barry, no government in their right mind would have foreseen any such war coming, nor prepared for it militarily if they had. They'd have tried to prevent it breaking out in the first place through other means, such as talking directly to the parties concerned.
In fact, even the German authorities (the NSDAP) of that period could not have foreseen what WW II was to develop into. Because if they had, they'd have prevented Hitler from starting the war.
And if people had known beforehand how WW I would become, don't believe that millions - tens of millions - of men in Britain and Europe would have enlisted: they wouldn't have! Not in their right mind they wouldn't have.
Neither in Germany and the Austro-Hungarian Empire, nor in Britain, Russia, France, Belgium and Italy.
If someone told us now that WW III were coming, with massive destruction and mass deaths, people world-wide would try to prevent it starting in the first place, not simply accept it and say "yes, alright, let's all go and enlist and fight it out".
And as for the Crimean War, Britain, France and Russia were all completely equipped for such a war, lacking nothing - except adequate nursing staff for the wounded. It was just a case of deciding to go and fight such a senseless war in the first place to make it possible.
In the end, Britain ended up fighting on Russia's side against the Ottoman Empire in WW I, didn't they Barry?
So what was the point in the Crimean War, then?