Primary Sources: US Army Interwar Infantry/Cavalry Organization Tables (Patreon)

https://www.battleorder.org/post/usa-30s-refdata

I've uploaded complete Tables of Organization for US Army Infantry Divisions, Cavalry Divisions and other non-divisional units (including Air Corps squadrons and Tank Regiments) from the early 1930s. In the 1933 one, there is also a bunch of tables of supply carrying capacity and supply requirements by subunit (particularly ammo and rations) in the Cavalry Division