1st Division adopted a new peacetime TO&E in preparation for war on 8 January 1940, which included three infantry regiments, one military police company, one engineer battalion, one signal company, one light field artillery regiment of three field artillery battalions and one medium field artillery regiment of two field artillery battalions, one medical battalion, and one quartermaster battalion. The authorized strength of this TO&E was 9,057 officers and enlisted men. 1st Infantry Division reorganized again on 1 November 1940 to a new TO&E, which added a reconnaissance troop, and organized the two field artillery regiments into a division artillery command, and beefed up the strength to a total authorized strength of 15,245 officers and enlisted men.