OET interlinear 2 SAM 24:2

uW Translation Notes:

Note 1 topic: figures-of-speech / explicit

הַ⁠חַ֣יִל אֲשֶׁר־אִתּ֗⁠וֹ

of,the_army (Some words not found in UHB: and=he/it_said the=king to/towards Yōʼāⱱ/(Joab) chief of,the_army which/who with=him/it go now in=all tribes_of Yisrael from,Dan and=unto Bəʼēr- seven and,enroll DOM the,people and,I_will_know DOM number_of of,the_people )

This seems to be a reference to the corps of soldiers stationed at the court who always remained on active military duty, that is, to David’s permanent army. The author describes these troops in 15:18 and 20:7, and he says in 8:16 that Joab commanded them. David wanted to know how many further men were eligible for military service, that is, how great were his reserves. Alternate translation: [his standing army]

Note 2 topic: figures-of-speech / merism

מִ⁠דָּן֙ וְ⁠עַד־בְּאֵ֣ר שֶׁ֔בַע

(Some words not found in UHB: and=he/it_said the=king to/towards Yōʼāⱱ/(Joab) chief of,the_army which/who with=him/it go now in=all tribes_of Yisrael from,Dan and=unto Bəʼēr- seven and,enroll DOM the,people and,I_will_know DOM number_of of,the_people )

To decide how to translate this expression here and in verse 15, see how you translated it in 3:10. Alternate translation: [throughout the entire territory of Israel]

Note 3 topic: figures-of-speech / explicit

אֶת־הָ⁠עָ֑ם

DOM the,people

By the people, in this context David means the men who could serve in his army. You could indicate this explicitly in your translation if that would be helpful to your readers. Alternate translation: [the fighting men]