to battle, to fight, to wage war / to compete (in a match, for example) / to contend (for one's own interests) / (figuratively) to get through with one's sufferings or difficulties

(literary) they

太刀: a type of long sword / 立ち: standing / 質: nature (of a person or an illness)

達: plural marker, ex: 子供達 (kodomo tachi) "children"

龍次: a male given name / 辰次: a male given name

達也, 達矢, 竜也, 辰弥, 達哉, 辰哉: a male given name

タチウオ: Largehead hairtail, a species of fish

立場: position

龍野: / Tatsuno (a city in Hyōgo Prefecture, Japan)

成り立つ: to consist of, to be composed of; to reach, to be concluded; to be buildable, to be constructible.