Switzerland was and always will be neutral in all past wars and more than likely in any future wars.
Switzerland was the country that advoided conflict during the world wars.
Probably WWII and the Cold War.
The Allies
Switzerland was neutral during both World Wars.
Spain was neutral during both World Wars.
Underseaboats.
yes
America fought on the Allied side during both World Wars and now they are one of the major Western Powers.
For clothing
The Strategy used during both world wars is Total War
XXth century: Balkanic war, World War I, World War II and many other wars during a long unfortunate history.
Wilson, FDR and Truman.