The information that their armies were with them can be made explicit: "These latter five kings and their armies joined together." (See: [[rc://en/ta/man/translate/figs-explicit]])
## as far as El-paran, which is near the desert ##
The phrase "which is near the desert" tells us something more about El-paran. You can translate this relative clause with two sentences if necessary: "as far as El-paran. El-paran is near the desert." (See the section on clauses in [[rc://en/ta/man/translate/figs-sentences]].)