[2][3] In 1931, Hennemier enrolled at Duke University where he studied business administration and was a member of the Sigma Alpha Epsilon fraternity.

[8][9] In 1955, Hennemier left Maryland to take the head coaching job with the Calgary Stampeders of the Canadian Football League (CFL).

Hennemier nearly signed Forrest Gregg, a tackle in the National Football League (NFL) who Vince Lombardi called "the finest player [he] ever coached.

"[11] Hennemier flew to Dallas to meet with Gregg, and over dinner offered him a $7,500 contract with a $500 signing bonus ($85,304 and $5,687, respectively, in inflation-adjusted terms).

[11] In February 1955, the Washington Redskins of the NFL sued Hennemier for $50,000 in damages ($568,696 adjusted for inflation) for an alleged attempt to lure away two of its tackles.

[19] Hennemier also held coaching positions at Duke, North Carolina, Washington & Lee, and Savannah High School.