From Longman Dictionary of Contemporary Englishthe field (of battle)the field (of battle)PMthe time or place where there is fighting in a war The new tank has yet to be tested in the field. medals won on the field of battle → field
Examples from the Corpus
on the field of battle• He is one of these rare men who has distinguished himself equally on the field of battle and at the bar.• Numbers on the field of battle counted for little.• Even then, only on the field of battle. 