Consider military conscription, which is where a government forces its own citizens to join the army and fight in foreign wars.
As I understand it, the typical argument is that freedom is not free, and rather must be fought for. Therefore we, as free peoples, have the responsibility to maintain it.
But there's a critical conflict buried here; namely, that the state is actively restricting the freedom/liberty of its citizens (at least temporally) in the name of security and expanded freedom in the future.
Therefore, my question is whether this can ever be morally justified. Is it ever just for a state to force individuals to join the army against their will and lead them into conflict and other life-threatening situations? What specific philosophers have written about this conflict, and what have their conclusions been?