[2] On June 11, 1862, he was promoted to lieutenant colonel and returned with the regiment to the Army of the Potomac and fought in the Battle of Antietam.

At Antietam, he had command of the right wing of the regiment in the attack on the stone bridge[3] and was wounded in the leg.

In January 1864, the regiment re-enlisted and on its return to the front was assigned to the Eighteenth Corps.

The sarcophagus is carved with his ornamental sword, cap and belt, inscribed with the battles he fought in and the words "Brave, just, generous and pure, without fear and reproach".

[2] A bronze statue in his likeness in the Barry Square neighborhood of Hartford, Connecticut was designed by Frederick Moynihan and cast at the Gorham Manufacturing Company.