Warren, Gouverneur Kemble (gəvərnērˈ) [key], 1830–82, Union general in the American Civil War, b. Cold Spring, N.Y. An army engineer, he assisted in the survey of the Mississippi delta and also engaged in surveying in the West. In the Civil War he commanded a brigade of the Army of the Potomac in the campaigns of 1862, distinguishing himself particularly at Gaines's Mill in the Seven Days battles. In the Gettysburg campaign Warren, who was then chief engineer, saved the Round Tops by promptly diverting troops to their defense, July 2, 1863. He took part in the indecisive operations following Gettysburg and saw action in the Wilderness campaign and in the fighting around Petersburg (1864–65). At Five Forks (Apr. 1, 1865) Gen. Philip H. Sheridan, alleging dilatoriness on Warren's part, removed him from command. Warren made repeated requests for an official examination of Sheridan's charges; soon after his death in 1882, a court of inquiry exonerated him. After the war he continued in the engineers corps. His Account of the 5th Army Corps (1866) is a vindication of his conduct.