Keith Haring | Keith Richards | Keith Urban | Toby Keith | Keith Jarrett | Keith Emerson | Keith Moon | Keith Carradine | Keith Sweat | Keith | Countdown with Keith Olbermann | Keith Miller | Keith Giffen | Keith David | David Keith | Keith Whitley | Keith Park | Keith Olbermann | Keith Jardine | Keith Green | Keith Ellison | Brian Keith | Keith Thibodeaux | Keith Rothfus | Keith Lockhart | Keith Ellison (politician) | Keith Barron | Kool Keith | Keith Van Horn | Keith Michell |
The concept was first described by the authors William S. Lind, Colonel Keith Nightengale (US Army), Captain John F. Schmitt (USMC), Colonel Joseph W. Sutton (US Army), and Lieutenant Colonel Gary I. Wilson (USMCR) in a 1989 Marine Corps Gazette article entitled “The Changing Face of War: Into the Fourth Generation”.