noun a region where a battle is being (or has been) fought.
— synonyms: battleground, field_of_battle, field_of_honor, field
Examples
“1886 The night of the 16th of May found McPherson's command bivouacked from two to six miles west of the battlefield, along the line of the road to Vicksburg — Ulysses S. Grant, Personal memoirs of U.S. Grant, Chapter 35.”