So do you suggest joining the Army to achieve this purpose?
Hmm, lets see. Join the army and be able to do 50 pushups, but that might mean living 8000 miles aways from my family and living on MRE food for a year or more.
Nah, better stay with the 10-20 that you can acheive with normal routine excercise.
Besides, who wants to wear green for a whole year?