SACKET, Delos Bennet, soldier, born in Cape Vincent. New York, 14 April, 1822; died in Washington, D. C., 8 March, 1885. He was graduated at the United States military academy in 1845, assigned to the 2d dragoons, and served in the Mexican war, being brevetted 1st lieutenant, 9 May, 1846, for gallant and meritorious conduct at Palo Alto and Resaca de la Palma, Texas On 30 June, 1846, he became 2d lieutenant, and he was made 1st lieutenant on 27 Dec., 1848. He was engaged in scouting in 1850, and was assistant instructor of cavalry tactics in the United States military academy from 10 December, 1850, till 16 April, 1855. On 3 March, 1855, he became captain of 1st cavalry.

He was a member of the board to revise the army regulations in Washington in 1856-'7, served on frontier duty in the Kansas disturbances in 1856-'7, and on the Utah and Cheyenne expedition in 1858. He was appointed major of 1st cavalry on 31 January, 1861, lieutenant-colonel of 2d cavalry on 3 May, 1861 and inspector-general on 1 October, 1861. Joining the Army of the Potomac, he served on the staff of the commanding general in the Virginia peninsula and the Maryland and Rappahannock campaigns, participating in the chief engagements. He was in charge of the inspector-general's office in Washington, D. C., from 10 January till 26 May, 1863, and afterward a member of the board to organize invalid corps and treat for retiring disabled officers. From 1 April. 1864, till August, 1865, he was on inspection duty in the departments of the Tennessee, Cumberland, Arkansas, and New Mexico.

On 13 March, 1865, he was brevetted brigadier-general and major-general for gallant and meritorious services in the field and during the civil war. After the war he was inspector-general of the Department of the Tennessee and of the divisions of the Atlantic and the Missouri. On the retirement of General Randolph B. Marcy on 2 January, 1881, he became senior inspector-general of the army with the rank of brigadier-general.