It depends entirely on the region and timeframe of the warmongering.
Blue collar workers
The United States support the nationalists while the Soviets support communist rebels.
I think you'll find that most normal people of any ethnic group have little support for that, or any other war. The only minority group that do support such madness are the ones that can make a profit from it. All the rest of us follow in sheep like servitude. 'Patriotism is the last refuge of the scoundrel' (quote: Samuel Johnson the diarist)
White patriots
The support of France was crucial to the US during its war for independence. France was the most important support to congress at that time.
South Vietnamese Servicemen were DRAFTED. If any of them volunteered, it was because they needed the employment (money) to support their families. And, there certainly was a chance of a few South Vietnamese men wanting money to support their families.
Blue collar workers
most likely no. he was a pacafist.
Republicans
Workingclass men
Republicans
The United States support the nationalists while the Soviets support communist rebels.
Farmers and settlers were likely to support the War of 1812 because they wanted the freeland that was promised and the farmers' right for trading was at stake so they agreed to the war.
media
media
Media
The mostly likely to survive even nuclear war are rats.
When you ask a question about a war, you need to include the NAME of the war in your question.