Third Seminole War James Madison Robertson (also referred to as Robinson[1]) (May 28, 1817 – January 21, 1891) was a career United States Army artillery officer who commanded the First Brigade of U.S.

[1][3] In May 1861, Robertson received his captaincy as the Union Army expanded for the Civil War, and was assigned to command Battery B, 2nd U.S.

He commanded the battery throughout the Peninsula Campaign in mid-1862, and received a brevet promotion to major for "gallant and meritorious service" at the Battle of Gaines' Mill.

Horse Artillery was attached to Brigadier General Philip Sheridan's Cavalry Corps, and Robertson was awarded a brevet promotion to colonel on May 31, 1864, for "gallant and meritorious service" at the Battle of Cold Harbor.

[1] At the end of the Civil War, Robertson was awarded a brevet promotion to the rank of brigadier general for services in command of the Horse Artillery Brigade throughout the Wilderness Campaign.