In April 1863 General Chalmers was placed in command of the military district of Mississippi and Louisiana and in 1864 he was assigned to the command of the cavalry brigades of Jeffrey Forrest and McCullock, forming the First division of Forrest's cavalry. He played a conspicuous part in all the brilliant campaigns of Forrest in North Mississippi, West Tennessee and Kentucky and was highly praised by Forrest.
After the war Chalmers was prominent in the politics of Mississippi. He was elected to the state senate in 1875 and 1876 and as a U.S. representative in the Forty-fifth and Forty-sixth Congress. He died at his home in Vicksburg, Mississippi in 1898.
Preserving our past while growing our future