field of battle vs field of honor

field of battle and field of honor both are nouns.

Word	Noun	Adjective	Verb	Adverb
field of battle	Yes	No	No	No
field of honor	Yes	No	No	No

As nouns, field of battle and field of honor are synonyms defined as:

field of battle and field of honor: a region where a battle is being (or has been) fought

Other synonyms of field of battle include battlefield, battleground, field.

field of battle (noun)	field of honor (noun)
a region where a battle is being (or has been) fought	the scene of a duel
	a region where a battle is being (or has been) fought