Conscription = Slavery ?

[Bengalzona]

Conscription is archaic and a move for the desperate only. The morale of conscripts is generally so low that an army needs to commit a significant percent of its forces just policing the conscripts and keeping them from running from battle. If the war is bad enough, you end up with your forces fighting themselves more than the enemy.

It will be even less necessary in the future as we will see more and more fighting done by drones (air, sea and land as the technology improves).