This quickly became a no-man's land with sharpshooters from both ... which was mature during the Civil War, is sometimes called the "Sickels Tree." A sketch by a bugler in a Massachusetts battery ...

Supplemental data on the number of Union sharpshooter units in each state is from A Compendium of the War of the Rebellion by Civil War statistician Frederick H. Dyer, first published in 1908.