WILLCOX, Orlando Bolivar, soldier, born in Detroit, Michigan, 16 April, 1823. He was graduated at the United States military academy, in 1847, eighth in a class of thirty-eight, among whom were Ambrose P. Hill and Ambrose E Burnside, and was assigned to the 4th artillery. He served in the latter part of the Mexican war, on the plains, and in the final campaign against the Seminoles in 1856-'7, but resigned his com mission on 10 September of the latter year, studied law, and in 1858 was admitted to the bar at Detroit, Michigan, where he practised till the opening of the civil war. He became colonel of the 1st Michigan regiment on 1 May, 1861, and his command was the first from the west to arrive at the seat of war. He was engaged in the capture of Alexandria, Virginia, and commanded a brigade at Bull Run, where he was wounded and captured. After confinement in Charleston and Columbia, South Carolina, till 17 August, 1862, during part, of which time he was kept a close prisoner as a hostage for Confederate privateers that were on trial for their lives in New York, he was exchanged and commissioned brigadier-general of volunteers, to date from 21 July, 1861. He took part in the Maryland and Rappahannock campaigns, temporarily commanded the 9th army corps and the district of central Kentucky from 10 April till 9 June, 1863, had charge of the district of Indiana and Michigan during the draft riots, and then engaged in the operations in eastern Tennessee till March, 1864. He commanded a division in the 9th corps of the Army of the Potomac in the Richmond campaign, and on 1 August, 1864, was brevetted major-general of volunteers "for distinguished and gallant services in the several actions since crossing the Rapidan." At Petersburg his division was the first to break through, and received the actual surrender of the city. From 26 April till 28 July, 1865, he had charge of the district of Washington, North Carolina, and from 7 August, of that year, till 15 January, 1866, he commanded that of Michigan. On the latter day he was mustered out, and returned to the practice of law at Detroit, where he was also made United States assessor of internal revenue; but on 28 July, 1866, he was recommissioned in the regular army, as colonel of the 29th infantry, and on 2 March, 1867, he received the brevets of brigadier-general for Spottsylvania, and major-general for the capture of Petersburg. It was transferred to the 12th infantry on 15 March, 1869, was superintendent of the general recruiting service in New York city in 1873-'4, and commanded various posts and departments till his promotion to brigadier-general, 13 October, 1886. While in command of the Department of Arizona, he received the thanks of the territorial legislature on 19 February, 1881, for "his constant and vigilant care, his untiring effort and military skill in protecting the people and freeing the territory of Arizona from the cruel and brutal outrages of the hostile Indian tribes within the military department." On 16 April, 1887, he was placed on the retired list, at which time he was in command of the Department of the Missouri. General Wilcox has published "Shoepack Recollections" (Boston, 1856), and "Faca, an Army Memoir, by Major March " (1857).