African-American men in Harlem volunteer for service in Ethiopia

The transcript discusses the enrollment of over 500 individuals, historical changes in 3737, and collects personal information such as weight, height, and profession. It explores the motivations and commitments of a physician willing to dedicate their life to the cause of Ethiopia and the defense of Africa.

What specific change is referenced in the question about 3737?

What are the speaker's physical attributes mentioned?