Reubenites

This refers to the people from the tribe of Rueben. (See: rc://en/ta/man/translate/translate-names)

Gadites

This refers to the people from the tribe of Gad.

"forty-four thousand seven hundred and sixty soldiers" (See: rc://en/ta/man/translate/translate-numbers)

The soldiers are described as skilled in warfare by the weapons they carried. AT: "who were all trained to fight well in battles" (See: rc://en/ta/man/translate/figs-metonymy rc://en/ta/man/translate/figs-ellipsis)

These are the names of people groups.