Force

Force is the energy of nature. Using it is as simple as just applying force to an object in some form or another without using the other 4 energies. For example; pushing a barrel.

(Not to be confused with "the Force" from Star wars. Which has nothing to do with this.)

Uses
Force is used to do many things. Most mundane technology is powered by it. Basically anything that can be done in the "Real life" verse and similar verses. And it is derived from any mundane energy source.

In fights it is used with melee weapons, bows, guns, cannons, etc. In more magical verses it is mostly used as a secondary fighting method. Or combined with one of the other energies to improve it somehow.

Or it used by those who do not have been trained to use the other energies, but still need a way to defend themselves.

Kiro Cloudwatcher
Leader of the ChaoZ guild. Before he became a martial artist and mastered the art of Ki he was part of the DCGF. There he trained to use swords and other technology in combat. He eventually joined the desert cavalry and became one of the cities top drivers. Later he left the city to go adventuring across Val but he still has a fondness for vehicles. His sword skills on the other hand have not had decent practice in years and they are quite rusty these days.