en_tn_condensed/2sa/23/18.md

Abishai ... Zeruiah

These are the names of men. Translate them as in 2 Samuel 2:18.

captain over the three

This means Abishai was the leader of the three who went and got water for David.

three hundred men

"300 men" (See: rc://en/ta/man/translate/translate-numbers)

He was often mentioned along with the three soldiers

This can be stated in active form. Alternate translation: "People often mentioned him when they spoke about the three bravest men" (See: rc://en/ta/man/translate/figs-activepassive)