http://lmgtfy.com/?q=is+the+military+draft+a+form+of+slavery
It's discussed, but from what I have seen, it is generally from a libertarian/Randian perspective.
Ron Paul on the draft
Ayn Rand on the draft*:
Of all the statist violations of individual rights in a mixed economy, the military draft is the worst. It is an abrogation of rights.
"It negates man's fundamental rightthe right to lifeand establishes the fundamental principle of statism: that a man's life belongs to the state, and the state may claim it by compelling him to sacrifice it in battle. Once that principle is accepted, the rest is only a matter of time.
-- AYN RAND
More Rand*:
"If the state may force a man to risk death or hideous maiming and crippling, in a war declared at the state's discretion, for a cause he may neither approve of nor even understand, if his consent is not required to send him into unspeakable martyrdomthen, in principle, all rights are negated in that state, and its government is not man's protector any longer. What else is there left to protect?
The most immoral contradictionin the chaos of today's anti-ideological groupsis that of the so-called "conservatives," who posture as defenders of individual rights, particularly property rights, but uphold and advocate the draft. By what infernal evasion can they hope to justify the proposition that creatures who have no right to life, have the right to a bank account? A slightly higherthough not much higherrung of hell should be reserved for those "liberals" who claim that man has the "right" to economic security, public housing, medical care, education, recreation, but no right to life, or: that man has the right to livelihood, but not to life.
-- AYN RAND
Here's a whole website dedicated to the idea, where I found the Rand quotes
FWIW, I agree with you. I believe it is slavery and I am wholly opposed to the draft. If a nation doesn't have the support of its citizens to fight a war without drafting said citizens, it has no business engaging in war. I am especially opposed to drafting people just because they have penises, and non-penis-bearers being exempt from said draft. It's bullshit.
* I am not endorsing Ayn Rand, I am providing quotes addressing the matter at hand as examples.