Habe jetzt mal im Internet nachgesehen und mehrere Definitionen gefunden. Hier die, worauf sich Pudel bezieht:
This unofficial motto of the US Marine Corps is an abbreviation for the Mandarin Gongye Hezhoushe, or industrial cooperative. The term was used in China, starting in 1938, to refer to small, industrial operations that were being established in rural China to replace the industrial centers that had been captured by the Japanese. The phrase was clipped to the initial characters of the two words, gung ho (or gung he, as it would be transliterated today), which means "work together." This clipping became a slogan for the industrial cooperative movement.
Und hier eine, die meiner Erklärung näher kommt (obwohl beide den gleichen Ursprung haben) :
Founded by Marines in 1992, the Gung-Ho Chuan Association, or GHCA, is a brotherhood of close combat instructors who research, practice, develop and teach the principles, tactics and techniques used by the elite Allied Forces of World War 2. The GHCA is one of the premier close combat training organization in existence today.
Forged in the streets of Shanghai, China and tempered in the Pacific and European theaters of war, this form of Western combatives which is also known as "gutter fighting" is still considered by many to be the true essence of close combat.
Like our forefathers, GHCA members not only practice "gutter fighting" but put it to test in high risk environments such as Mexico, Bosnia, Peru, Haiti, Indonesia, Kosovo, Middle East, Africa, and Colombia. Since the GHCA's existence approximately one-half of the certified instructors have deployed to high-risk environments as trainers, members of protective security details, and military special mission units.
Keeping with WW2 USMC Close Combat tradition several GHCA Instructors are current Close Combat Subject Matter Experts for the United States Marine Corps.
The goal of the GHCA is to produce high-quality instructors and practitioners of close combat, and to live up to their motto -
"Working together to keep our fighting heritage alive."
Edit: Ob da mal wieder einer schneller war?