His regiment, the 100th Pennsylvania Infantry, was known as the "Roundheads" because it was recruited from descendants of the followers of Oliver Cromwell.

Leasure returned for the Battle of Fredericksburg where he took command of the 3rd Brigade, 1st Division in the IX Corps.

Moving to the Western Theater with the IX Corps, Leasure continued in brigade command under Maj. Gen. John Parke during the Siege of Vicksburg and Blue Springs.

When the war ended, Leasure returned to Pennsylvania where he practiced medicine in the borough of Darlington.

The monument was placed across from the Greersburg Academy school building where Leasure spent a considerable amount of time in his life.