The State of New York sent over 413,000 men to the Union Army during the Civil War, the largest number from any state. Over 23,000 were at the Battle of Gettysburg, making up one quarter of the Army of the Potomac. They were organized into 68 infantry regiments, one infantry battalion, four companies of sharpshooters, seven cavalry regiments, an independent cavalry company and 16 artillery batteries. Two of the Army of the Potomac's corps commanders, Major General Daniel Sickles and Major General Henry Slocum, were from New York.
New York's unit monuments on this site are separated into two sections: