John Gill Commentary 2 Chronicles 26:14

"And Uzziah prepared for them, even for all the host, shields, and spears, and helmets, and coats of mail, and bows, and stones for slinging." — 2 Chronicles 26:14 (ASV)

And Uzziah prepared for them throughout all the host
For every soldier in the army:

shields and spears ;
defensive and offensive weapons, the one to cover and protect their bodies, the other to push and pierce their enemies:

and helmets, and habergeons ;
the first of these were a covering for the head in the day of battle, and the other coats of mail, to defend the body:

and bows ;
to shoot arrows out of:

and slings to cast stones ;
at which the Benjaminites formerly were very expert.