en_tn/2ch/25/21.md

met each other face to face

This idiom means they were both at the battle in person, rather than only sending other people to fight. See how you translated a similar phrase in 2 Chronicles 25:17. AT: "met each other in person" (See: rc://en/ta/man/translate/figs-idiom)

Beth Shemesh, which belongs to Judah

The city of Beth Shemesh was located in Judah.