11th U.S. Infantry 1866-1869

On 5 December 1866, the 1st Battalion, 11th U.S. Infantry was reorganized and redesignated as the 11th Infantry. Concurrent with the new designation was the organizzation of two addtional companies, I and K. The regiment remained under this structure until 1869 when it was consolidated with the 34th Infantry (which had been the old 3rd Battalion, 16th Infantry).