soldiership vs attainment

soldiership and attainment both are nouns.

Word	Noun	Adjective	Verb	Adverb
soldiership	Yes	No	No	No
attainment	Yes	No	No	No

As nouns, attainment is a hypernym of soldiership; that is, attainment is a word with a broader meaning than soldiership:

Other hypernyms of soldiership include accomplishment, acquirement, acquisition, skill.

soldiership (noun)	attainment (noun)
skills that are required for the life of soldier	the act of achieving an aim
	arrival at a new stage
	an ability that has been acquired by training