en_tn_condensed/1ch/26/26.md

were over

This is an idiom. Alternate translation: "were in charge of" (See: rc://en/ta/man/translate/figs-idiom)

commanders over thousands and hundreds

Possible meanings are 1) these numbers represent the exact amount of soldiers that these commanders led. Alternate translation: "the commanders over 1,000 soldiers and the commanders over 100 soldiers" or 2) the words translated as "thousands" and "hundreds" do not represent exact numbers, but are the names of larger and smaller military divisions. Alternate translation: "the commanders over large military divisions and the commanders over smaller military divisions" (See: rc://en/ta/man/translate/translate-numbers)