This describes what Joab commanded by blowing the trumpet. AT: "Then Joab blew the trumpet to call back the army, and the army returned from pursuing Israel" (See: [[rc://en/ta/man/translate/figs-explicit]])
# they buried his body under a very large pile of stones
After putting his body in the pit they covered it with a pile of stones. This can be stated more clearly. AT: "they covered his body with a huge pile of stones" (See: [[rc://en/ta/man/translate/figs-explicit]])
# while all Israel fled
Here "all Israel" refers to the Israelite soldiers. The word "fled" means "ran away." AT: "while all the Israelite soldiers ran away" (See: [[rc://en/ta/man/translate/figs-synecdoche]])