Seo initially studied in the educational institution Daesung School, founded by Ahn Changho.

He later moved to Siberia and led the military training of independence activists.

After 1919, his main focus of his movement happened in Southern Manchuria.This is where he went to a Aviation school in Beijing, which led him to become a pilot.

He also once led an air Brigade of chinese warlord Feng Yuxiang.

[1] Seo used to be credited as the first Korean pilot ever to exist in history, however, an earlier example in 1918 exists, whose name was George Lee (Lee Eung-ho), who made his first flight in 1918 as part of the American Air force.