No,... free will doesn't give one the right to infringe on the rights of others.
But any governmental law which isn't in place to protect the rights of the individual is tyranny.
Conscription has been employed by virtually every government that has ever existed,..including Nazi Germany, Russia, China, Cuba, Fascist Italy,...you name it.
Just because it's *your* government enacting the slavery decree doesn't change the fact that it's slavery.
Just like taxes are extortion,...
Governments rob you,..enslave you,..tyrannize you,.. and if you don't bend over and take it, you're considered unpatriotic.
It's the oldest game in the world,..and every government on the planet plays it.