American Civil War Samuel H. Cook was a Union officer who served as a captain in the American Civil War.

A veteran of the fighting in Kansas, in 1861 he started recruiting volunteers in Denver to form a unit of soldiers to head east and fight against the Confederacy.

[1] However, Governor William Gilpin of the Colorado Territory, offering funds to raise the unit, persuaded him to stay and help raise the 1st Regiment of Colorado Volunteers.

[2] Chivington's recruits formed the core of the new unit.

At the Battle of Glorieta Pass, Cook was wounded at Apache Canyon.