Cadet band drum majors and majorettes in full dress uniforms. The two ROTC drum majors on each end of group are wearing the standard mid-1930s dress coat with service breeches (jodhpurs pants). Sam Brown belts with high leather boots. The four "junior" drum majors and majorettes are wearing non-standard uniforms, probably band issued with garrison caps.
Stock portrait from US Army. Name of person in this photograph is listed as: Bryan #51402 (no other identification, subject is a Major or Lt. Colonel, US Army Air Corps badges)
Portrait of Brigadier General Thomas M. Robbins, probably early WWII. Promoted to Major General, Robbins was involved in the Manhattan Project as the head of the Corps of Engineers Construction Division, with a deputy commander, General Leslie Groves (who ended up running the project to develop the atomic bomb). This photograph is a stock US Army portrait, and may have been used for OSC publications or ROTC department.