I served in Iraq, multiple combat tours with the Marines.

The relationship between MASH and my combat experience is zero.

Korea was a serious bloodfest.

Most people who actually WENT to Vietnam lived in large bases and never went out beyond the wire.

MASH's superficiality was what made it last so long with Americans. 

It was more powerful to those who never served or who never went outside of the wire.

Hollywood has distorted the reality of the Vietnam war.   For those who served  in over-run firebases (see Turley's description of the Easter Offensive) or who spent a substantial period of their deployment outside of the wire, my hat is off to them. I served with many combat experienced Vietnam vets in the Marines.   Good people.  

They hated MASH.