The area where a land battle is or was fought, which is not necessarily a field.

plural of battlefield

(idiomatic, informal, paleontology) A fossil site with an unusually high concentration of belemnite rostra.

plural of belemnite battlefield

(US military jargon) Warfare involving advanced technologies that expand military engagement beyond the physical battlefield, such as high-speed information technology, artificial intelligence, long-range sensors, stealth, precision-guided munitions and sensor-to-shooter systems.

plural of hyperactive battlefield