Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Problem:Context : Lieutenant Junior Grade Clarence Samuels (June 11, 1900 -- 1983), was the first Hispanic American of African descent photographer in the United States Coast Guard, to command a cutter, as well as the first one to be a commanding officer of a Coast Guard vessel during wartime.
Question : What army was Clarence Samuels a part of?
Solution:
United States Coast Guard