Is the Keysi Fighting Method studied exclusively by any military unit in the world or is it mixed with other military martial arts such as Krav Maga, Silat, etc?
I cannot find any reference to a country's military training exclusively in the Keysi method. That said, I have yet to find any reference to a military officially using any part of KFM outside of sites associated with the style who claim that it's "used by military and security forces", which makes me wonder if it's used officially at all.
On further poking around for quotes, I can't even find much mention of it being used in the military from the Keysi sites, largely people claiming that it's aimed at military usage and people mentioning that their Keysi instructor has military experience.
- "Internationally regulated program aimed at professional police, military and private security self defence..."
- "Apparently some KFM moves are being incorporated to MMA instruction and are being taught in some military forces for very close combat."
- "My instructor offers KFM as one of the primary arts he teaches. .... His practical fighting foundation is based on his extensive combat background: US Naval Search & Rescue, Nuclear Weapons Security for the US Navy, Close-Quarters-Combat Instructor for Blackwater (now Xe), bodyguard for dignitaries in Iraq, and being a Master Officer for Virginia Beach. .... He's a combat historian, and travels to different locations in the US and around the globe to teach combat seminars for law enforcement, military (I believe), and citizens."
- "KFM has also been contracted now by the military and law enforcement communities for training programs which have been specifically designed for these areas."