One difference between then and now, my unit didn't wait for orders to come down. We all sacrificed days off to get out there with shovels and a truck we requisitioned to haul off debris. So yes, we were "volunteers" in the sense no one ordered us to do it, and we sure weren't paid overtime for our labor. All we got were "attaboys" that looked good on our fitness reports, and another shiny thing to put on our uniforms.
I guess the military these days just doesn't work that way.
Onward and upward,
airforce