https://screenrant.com/why-mash-not-use-theme-song-meaning/

CBS made some changes to the MASH's original theme song before the iconic medical comedy-drama can use it because of one important reason.

https://screenrant.com/why-mash-not-use-theme-song-meaning/

CBS made some changes to the MASH's original theme song before the iconic medical comedy-drama can use it because of one important reason.

Basically just left out the lyrics and made it an instrumental, right?

The True Story of How a Teenager Created ‘M*A*S*H’s Theme Song (https://collider.com/mash-theme-song-explained/)

Robert Altman made this a family affair.