[10] However, he never signed with the Cardinals as his football career was interrupted by a stint in the United States Navy during World War II.

[1] After the war, he signed with the Los Angeles Dons of the All-America Football Conference (AAFC) in 1946.

[11] He started all 14 games for the Dons at left tackle during the 1946 season, punting 44 times for 1,996 yards (45.4 average) and scoring one blocked kick/missed field goal return touchdown.

[10] Reinhard started all 12 games at left tackle for the Dons during the AAFC's final season in 1949, garnering first-team All-AAFC honors from the AAFC, and second-team All-AAFC accolades from the AP and New York Daily News.

[10] On June 2, 1950, the Cardinals traded Reinhard's NFL rights to the Los Angeles Rams for Gerard Cowhig, Bob Shaw, and Tom Keane.