[infantrycak]

I think Tom Landry should be included.

Texas born and raised - UT and UofH
WWII volunteer.
Huge volunteer and leader to anyone around him.
All-pro NFL player while at the same time coaching.
DC with Lombardi as OC.
29 year HC with 5 SB appearances.
An inventor of the 4-3 defense then refined it in the flex.
Defensive guy who became an offensive innovator.
Innovated strength and conditioning programs.
Innovated statistical breakdown of opponent tendencies.

Great man and Texan.