Here "He" refers to his army. Alternate translation: "Amaziah's army killed" or "Amaziah's soldiers killed" (See: [[rc://en/ta/man/translate/figs-synecdoche]])
Here the word "he" refers to King amaziah and represents himself and his army. Alternate translation: "King Amaziah's army captured the city of Sela" (See: [[rc://en/ta/man/translate/figs-synecdoche]])