Co. A, 1st N.J. Inf. Union Army American Civil War
Uzal Hand Trowbridge Born: June 7, 1839, New Providence, Essex Co., New Jersey Died: June 27,1862, Gaines Mill, Prince William, Hanover Co., Virginia Parents: John Trowbridge & Clarissa Hand Cause of Death: killed at the Battle of Gaines Mill or First Cold Harbor, Va. Military Service: Union Army, Company A, 1st New Jersey Infantry, American Civil War
The headstone of Uzal Hand Trowbridge at the New Providence Presbyterian Church Cemetery in New Providence, NJ. Picture taken by "TomKat" at Find A Grave.com 
UZAL HAND TROWBRIDGE
Uzal H. Trowbridge enlisted in the Union Army on May 16, 1861 for a three year tour of duty. The following year he was killed at the Battle of Gaines Mills, Virginia on June 27, 1862, also known as the First Battle of Cold Harbor. The following is a summary of the battle from the National Park Service Civil War battlefields website
Gaines’ Mill Other Names: First Cold Harbor Location: Hanover County Campaign: Peninsula Campaign (March-September 1862) Date: June 27, 1862 Principal Commanders: Brig. Gen. Fitz John Porter [US]; Gen. Robert E. Lee [CS] Forces Engaged: 91,232 total (US 34,214; CS 57,018) Estimated Casualties: 15,500 total (US 6,800; CS 8,700)
Description: This was the third of the Seven Days Battles. On June 27, 1862, Gen. Robert E. Lee renewed his attacks against Porter's V Corps, which had established a strong defensive line behind Boatswain's Swamp. north of the Chickahominy River. Porter’s reinforced V Corps held fast for the afternoon against disjointed Confederate attacks, inflicting heavy casualties. At dusk, the Confederates finally mounted a coordinated assault that broke Porter’s line and drove his soldiers back toward the river. The Federals retreated across the river during the night. Defeat at Gaines’ Mill convinced McClellan to abandon his advance on Richmond and begin the retreat to James River. Gaines’ Mill saved Richmond for the Confederacy in 1862. Result(s): Confederate victory