2nd Battalion, 7th Infantry Regiment, was originally constituted on 11 January 1812 in the Regular Army as a company of the 8th Infantry. It organized in 1812 in Tennessee, Georgia, or the adjacent territories. It was consolidated in May-October 1815 with a company of the 24th Infantry (constituted on 26 June 1812) and a company of the 39th Infantry (constituted on 29 January 1813) to form a company of the 7th Infantry. The unit was redesignated on 21 August 1816 as Company B, 7th Infantry