OET interlinear HERO (JDG) 7:8

uW Translation Notes:

Note 1 topic: grammar-collectivenouns

בְּ⁠יָדָ֜⁠ם

(Some words not found in UHB: and=they_took DOM provisions the,people in,hand_of,their and=DOM trumpets_of,their and=DOM all/each/any/every (a)_man Yisrael sent (a)_man to,tents_of,his and,on,three hundreds the=man kept and,the_camp_of Midyān it_became to=him/it from=under in,valley )

See how you translated the same expression in 7:6. Alternate translation: [into their hands]

Note 2 topic: writing-pronouns

וְ⁠אֵ֣ת שׁוֹפְרֹֽתֵי⁠הֶ֗ם

and=DOM trumpets_of,their

The pronoun their refers to the soldiers who were leaving the army. It may be helpful to clarify this for your readers. Alternate translation: [and the shofars that the other soldiers had brought]

Note 3 topic: figures-of-speech / explicit

וְ⁠אֵ֨ת כָּל־אִ֤ישׁ יִשְׂרָאֵל֙

and=DOM (Some words not found in UHB: and=they_took DOM provisions the,people in,hand_of,their and=DOM trumpets_of,their and=DOM all/each/any/every (a)_man Yisrael sent (a)_man to,tents_of,his and,on,three hundreds the=man kept and,the_camp_of Midyān it_became to=him/it from=under in,valley )

The author assumes that readers will understand that by every man of Israel he means the soldiers who had not lapped the water from their hands. You could indicate this explicitly in your translation if that would be helpful to your readers. Alternate translation: [but the soldiers who had not lapped the water from their hands]

Note 4 topic: writing-newevent

וּ⁠מַחֲנֵ֣ה מִדְיָ֔ן הָ֥יָה ל֖⁠וֹ מִ⁠תַּ֥חַת בָּ⁠עֵֽמֶק

and,the_camp_of Midyān it_became to=him/it (Some words not found in UHB: and=they_took DOM provisions the,people in,hand_of,their and=DOM trumpets_of,their and=DOM all/each/any/every (a)_man Yisrael sent (a)_man to,tents_of,his and,on,three hundreds the=man kept and,the_camp_of Midyān it_became to=him/it from=under in,valley )

The author is introducing a new event in the story. The ULT indicates this with the word Now. Use a word, phrase, or other method in your language that is natural for introducing a new event.