veteran soldier vs veteran

veteran soldier and veteran both are nouns.

Word	Noun	Adjective	Verb	Adverb
veteran soldier	Yes	No	No	No
veteran	Yes	Yes	No	No

As nouns, veteran soldier and veteran are synonyms defined as:

veteran soldier and veteran: a serviceman who has seen considerable active service

veteran soldier (noun)	veteran (noun)
a serviceman who has seen considerable active service	an experienced person who has been through many battles; someone who has given long service
	a person who has served in the armed forces
	a serviceman who has seen considerable active service

veteran soldier (adjective)	veteran (adjective)
	rendered competent through trial and experience