Gallagher then joined the Browns, where he stayed for three seasons before resigning to take the head coaching job at Santa Clara.
Gallagher subsequently returned to the Browns as a scout, and remained with the team until 1960, when he became the Bills' general manager.
[3] While at Ironton, he coached future Chicago Bears star halfback George McAfee as the team won the state football championship in 1935.
[2][4] Gallagher left Ironton in 1940 to take a job as an assistant coach for the football, basketball and baseball teams at the College of William & Mary in Virginia.
[1] He rose to the rank of lieutenant commander before his discharge in 1945, when he returned to the college and became head baseball and basketball coach in 1946–47.
[3] He spent three seasons in Cleveland, tutoring receivers including Mac Speedie and Dante Lavelli, who was later inducted into the Pro Football Hall of Fame.
[4] At Santa Clara, Gallagher brought in Mike Scarry, a former Browns center and Western Reserve University coach, as an assistant.
[11] He was hired on a temporary basis to help Cleveland assistant Weeb Ewbank prepare for the NFL Draft.
[12] In February 1953, however, he signed as an end coach for the NFL's Chicago Cardinals after considering a competing offer to assist Pappy Waldorf at the University of California.
[15] Gallagher remained with the Browns until 1960, when he was appointed the general manager of the Buffalo Bills, a team in the new American Football League.
[16] In 1967, Gallagher was expected to rejoin Brown, who had been fired as Cleveland's coach in 1963 and was starting a new team called the Cincinnati Bengals.