Historically speaking, what wars would you have willingly fought in? If you did fight in a war, would you do it again?
For me, the American Revolution, Civil War, and WWII. That's about it. I don't know enough about the wars of other countries to really make a decision.
Interesting. Why the American Revolution?
I presume that you are basing your decision on the just nature of the war - that the goals of the side for which you would have fought are, in your opinion, sufficiently laudable as to be worth risking your life to achieve. I can see how that might apply to the fight against Nazism, Fascism and Japanese Imperialism in WWII; Or the fight against the supporters of slavery in the American Civil War; but I am not convinced that any of the direct goals of the American Revolution, on either side, are worth risking your life over. I can see how you might rather risk death then live in the Third Reich under Hitler; And I can understand why you might put your life on the line to free millions of slaves; but would you
really rather risk death than live in Canada?
Is this a Justin Beiber thing?
I have never fought in a war, but I would say that WWII was a just war, and I would have volunteered to fight in it had I been of an age to do so at the time.
The English and French Civil Wars established the principles of democracy; but neither was predictable as doing so until some time after the event, so to be persuaded to fight in those, I would have needed foreknowledge of their long term and non-obvious effects. The royalists in both conflicts could be forgiven for thinking that their cause was the more noble - unlike those who fought for the Nazis in WWII, who cannot reasonably be excused for not knowing the nature of the regime for which they were fighting.
The Republicans in the Spanish Civil War had a just cause, but ultimately lost. At the time, I might have volunteered, but with hindsight, volunteering for a lost cause is futile.
I can't think off the top of my head of any other wars where one side was sufficiently clearly in the right as to justify risking my precious skin for their cause.