military posture vs military strength

military posture and military strength both are nouns.

Word	Noun	Adjective	Verb	Adverb
military posture	Yes	No	No	No
military strength	Yes	No	No	No

As nouns, military posture and military strength are synonyms defined as:

military posture and military strength: capability in terms of personnel and materiel that affect the capacity to fight a war

Other synonyms of military posture include military capability, posture, strength.

military posture (noun)	military strength (noun)
capability in terms of personnel and materiel that affect the capacity to fight a war	capability in terms of personnel and materiel that affect the capacity to fight a war