Captain Glenny then went earnestly at work and recruited his Company to the minimum standard, and by vote of its members united its destinies with the 64th Regiment N. Y. Volunteers, commanded by Col. Thomas J. Parker.
On the 10th of December the Regiment moved to Washington, and a month later crossed the Potomac and camped with the main army three miles west of Alexandria, and was brigaded under General O. O. Howard, who commanded the first Brigade, first Division, second Corps. Early in the spring of 1862, the Brigade moved one week in advance of the main army for the purpose of repairing the Orange & Alexandria Railroad. A short distance beyond Fairfax Station signs of the enemy were discovered, and for safety to the command, two Companies from the 64th, under command of Captain Glenny, (his own being one of the number) were sent some considerable distance to the front as an extreme outpost. Here the first blood of the opening campaign was drawn by shooting a rebel scout by one of Captain Glenny's men.
The main army soon after advanced to the famous fields of Manassas, but only to find the enemy beating a hasty retreat, leaving every conceivable ruin in their track.
At this juncture the army changed its base to the Peninsula and Chickahominy swamps, where, after the siege of Yorktown, and on the first of June, was fought the terrific battle of Fair Oaks, in which Captain Glenny, while leading his men in a charge, received a wound, which, for a time, was thought to be mortal, a minnie ball passing through his left shoulder.
In about two months he again returned to his command, but so disabled that he was detached on recruiting service and stationed at Elmira; after which he returned to the army, and after nearly another year's campaign, was, in accordance with orders, again detached at Elmira on service connected with the draft. After being relieved from this duty, he rejoined his command, with which he served until the close of the war.
Owing to circumstances beyond his control, he served near two and a half years as Captain without promotion, after which in rapid succession he received the different grades of Major, Lieut. Colonel and Colonel, but was unable to muster into the latter grade by reason of insufficiency of numbers in the Regiment. This was, however, in part recompensed for, as after the smoke of battle and the clash of arms had ceased, and honors were conferred upon "whom honor was due," Captain Glenny had two grades by brevet conferred upon him by the President, that of Brevet Colonel and Brevet Brigadier General, for gallant and meritorious services--honors which he modestly and unassumingly wears, but of which he may justly be proud.