Thats exactly right! During the anti-war demonstrations in 2003 Rangel was interviewed for CSPAN and he said reinstating the draft will galvanize the general public against the war, as in the 60's. He doesn't care one whit about national service.
The Constitution has some very specific things to say about “national service.” It says that the militia can be federalized by the Congress to perform it’s three Constitutionally defined missions. No more than that. It doesn’t say the militia can be turned into an Army. And the difference is substantial - militia’s fight with their own weapons, fight for a limited period of time and don’t leave the US.