Basing The Details On Real People
A lot of characters from the show, both guest and regular ones, had personal details or names that came from the lives and interests of the writers and actors. Exhibit A: Klinger comes from the same hometown as Jamie Farr, his actor.

Basing The Details On Real People
The Spin-Offs Of The Show
There were 3 spin-offs of the show. We already talked about one of them, W*A*L*T*E*R. Its pilot aired just once. Aside from that, there was also the more successful Trapper John, M.D., as well as AfterMASH

The Spin-Offs Of The Show