THE 4 RANGES OF COMBAT
1. Long Range
2. Medium Range
3. Close Range
4. Ground Range
The 4 Ranges of Combat is pretty much universal so it's not just limited to FMA (Filipino Martial Arts) such as Eskrima, Kali, and Arnis.
It's not the only method around, but it can actually be used for just about any martial arts style!
Long Range is when you have ample distance between your opponent and yourself. This gives you enough reaction time to defend against attacks.
Medium Range is when you and your opponent are right there in each other's striking range. Contrary to popular belief there is simply not enough reaction time in Medium Range.
Close Range is the clinch. In Close Range you are simply too close to see your opponent's attacks. Since you can't rely on sight, you must feel them.
Ground Range is when you are fighting on the ground.