en_tn/num/01/22.md

the names of all the mustered men twenty years old or older, able to go to war, were counted

This can be stated in active form. See how you translated this in Numbers 1:20. Alternate translation: "they counted by name all the mustered men twenty years old or older, able to go to war, by" (See: rc://en/ta/man/jit/figs-activepassive)

mustered men

"men they had called to fight"

counted man by man

"counted one by one" or "counted head by head"