[4] Chadwick was hired to coach baseball, football, and track at Albion College in 1906 season.

[7] After leaving Albion, Chadwick served as the head football coach at Mississippi A&M from 1909 until 1913 compiling an overall record of 29–12–2.

Following that season he turned the reins over to Earl C. Hayes but continued to coach football and baseball.

During his time as AD he worked on improving athletic facilities such as building baseball and football fields, tennis courts, and constructing the school’s first gymnasium.

[10] He was relieved of his duties as athletic director during the so-called "Bilbo Purge" of 1930 during which time Governor Theodore G. Bilbo, along with the boards of trustees of the schools, made several sweeping staff and administration changes at Mississippi's institutions of higher learning.

[17] Chadwick Lake, located on the Mississippi State campus near the Bryan Athletic Administration Building, is named in his honor.