When it's to attack a foreign nation that's not even threatening you, for sure. Definitely a weapon of the capitalist class against both their own people and other capitalists.

But when you're being attacked?

I don't have a problem with, for random example, the Soviet Union drafting millions of people to beat the Nazis. Or America. Or Britain. Just the aggressors in a war are committing enslavement, the defenders can at least be argued to being entitled to a collectivised defense.

I'd say even Mao drafting people for the Civil War didn't count (all people living under capitalism being understood to be being attacked and the KMT being genocidal corrupt warlords regardless who started the first period of the war in the first place)