Military officer; born in
Brimfield, Mass., May 29, 1810; graduated at
West Point in 1832, entered the artillery, and was made assistant adjutant, with rank of captain, in 1838.
Becoming full captain in 1841, he was appointed instructor of artillery and cavalry at
West Point in 1844.
He did service against the Indians on the
Pacific coast, and when the
Civil War broke out was appointed (May, 1861), colonel of infantry and brigadier-general of volunteers.
At the
battle of Bull Run, in July, he commanded the first brigade in
Taylor's division.
Early in 1862 he was appointed commander of the 4th Corps of the Army of the Potomac, and won the rank of major-general of volunteers and the brevet of brigadier-general,
U. S. A., by his conduct in the
peninsular campaign.
He resigned May 6, 1864, and engaged in gold-mining.
General Keyes published
Fifty years observation of men and events.
He died in
Nice, France, Oct. 11, 1895.