Col.
I do certainly know some veterans, American, German and even Mexican WWII veterans, including my own grandfather. I also know some Spanish Civil War veterans and a 'Blue DIvision' veteran.
And there is, of course, Sapper, our most respected forum member.
As to the most 'war-like' nation, it should definately by Germany, closely followed by Japan.
Germany, in 1871 was born as a warrior nation, built and designed for war. All its foreign policy from 1815 to 1871 was directed at achieving German unification through war. And from 1871 until 1914 all German policy was aimed at acheiving German hægemony in Europe and then, worldwide, politcially, territorially and economically, through war. From 1933 to 1939 Germany's main aim was the conquest and colonisation of eastern Europe through war and the physical erradication of the 'inferior' races.
Japan followed almost the same belicist path: imposing its will and controll over other nations through war.
That France, Great Britain, Russia or even the United States had been fighting wars all over the world for centuries is pretty normal, being the powers they were and because human nature is that way. But they did NOT put all their money and energies on war, nor was it their ultimate aim and the mean to achieve everything.