The Battle of Nashville was part of the US Civil War, and took place from the 15th to the 16th of December, 1864. The Union won.
This photograph was taken on the 16th, and shows the Federal outer line:
At least several hundred people were killed. 387 Federal soldiers were killed, and 112 went missing. However, as most Confederate units did not submit a report of the battle, their losses are unknown. It is generally assumed their losses were greater.