Earlier posts referred to the Officers Training School for African American soldiers at Fort Des Moines, Iowa. We listed the names of those from Kansas that attended the school.
One of those was First Lieutenant William D. Bly of Leavenworth, who was later promoted to captain. Bly had been in the regular army for at least eighteen years, although tracking this is a bit sketchy. There is a reference indicating his service started on June 20, 1896 (another source says 1899), and that he was in the Spanish-American War. Perhaps someone can add information in a comment. What does make sense, however is that those invited to the school either had a college education or had been a non-commissioned officer. We might assume that Bly was just that in his long service, as the 1940 census says he completed his second year of high school. He was clearly a career man, leaving the service on September 15, 1925.