Daniel Leasure

Daniel Leasure
Born	(1819-03-18)March 18, 1819 Westmoreland County, Pennsylvania
Died	October 10, 1886(1886-10-10) (aged 67) St. Paul, Minnesota
Buried at	New Castle, Pennsylvania
Allegiance	United States of America Union
Service/branch	United States Army Union Army
Years of service	1861–64
Rank	Colonel
Battles/wars	American Civil War Battle of Secessionville Second Battle of Bull Run Battle of Chantilly Battle of Fredericksburg Siege of Vicksburg Battle of the Wilderness Battle of Spotsylvania Court House
Other work	Physician, politician, and trustee of Greersburg Academy

Daniel Leasure (March 18, 1819 – October 10, 1886) was an American soldier and physician who served as a colonel and brigade commander in the Union Army during the American Civil War.

Leasure was born in 1819 near Pittsburgh in Westmoreland County, Pennsylvania. He attended Greersburg Academy in nearby Darlington in Beaver County from 1838 to 1840. Afterwards, he spent time in medical school in Pittsburgh.

Leasure held the rank of colonel in the IX Corps through most of the war. His regiment, the 100th Pennsylvania Regiment, was known as the "Roundheads" because it was recruited from descendents of the followers of Oliver Cromwell. The regiment first saw action in the command of Brig. Gen. Isaac I. Stevens at the Battle of Secessionville in South Carolina on June 16, 1862.

Transferred to the Virginia theater of the war, Leasure participated in the Second Battle of Bull Run, and the Battle of Chantilly. Wounded at Second Bull Run he subsequently missed the Maryland Campaign. Leasure returned for the Battle of Fredericksburg where he took command of the 3rd Brigade, 1st Division in the IX Corps.