Members of James Buchanan's Cabinet Who Sided with the Confederacy

John C. Breckinridge: Vice President of the United States, Confederate Major-General and Secretary of War of the Confederate States

Howell Cobb: Secretary of the Treasury of the United States, President of the Provisional Confederate Congress, and Confederate Major-General

John B. Floyd: Secretary of War of the United States, Confederate Brigadier-General

Jacob Thompson: Secretary of the Interior of the United States, Inspector General of the Confederate Army, Lieutenant Colonel and Aide-de Camp to General P.G.T. Beauregard