Maynard did NOT fail his physical for his first tenure in the army. In season 1 he mistakenly thought he was drafted. Her mis-read the letter. He and all the kids from school joined up at the malt shop for his farewell. Then Maynard found that he has mis-read the letter but joined the army- yes joined- and for a short time - within that one episode- he became a Corporal and by the end of the episode- was discharged. Maynard had done well but the army eventually didnt want him. So...he was already in the army at one point - he did not fail a physical. Maynard was actually a good guy and his first army stint was - perhaps- a way to show viewers that "beatniks" are not bad people. I love Maynard. He was my crush when I was like...10. lol