Sometimes people ask “what was boot-camp like?” I tell them to watch the first part of “Full Metal Jacket” - that is exactly what it was like, down to the uniforms, squad bay, weapons, etc. I was a football player and had never run 3 miles in my life, and I barely beat the maximum run time on the introductory PFT. I got knocked across the squad bay twice, averaged 3 hours sleep each night during the first two weeks and I lost 30 lbs in 10 weeks. By the end I was a lean mean green (amphibious) fighting machine.
The Boys in Company C
https://www.youtube.com/watch?v=veMJHnnOjrg
https://www.youtube.com/watch?v=iIt3YbPh6Lg