U.S. Negro troops on way to Liberia. As a U.S. Army transport plows through the Atlantic on its way to Liberia, Africa, the Negro crew of a 37mm anti-aircraft gun holds a shipboard practice session. The soldiers, members of a U.S. Army Engineer's unit, were especially interested in Liberia, a Negro Republic founded by their ancestors whose governmental system is patterned on that of the U.S.