I know that is a Marine term, but the Marines are actually part of the navy, so it is OK to use it. This phrase usually is applied to US Marines and often among themselves as both an insult and a compliment. It is a Chinese phrase meaning, "work together", or "all together", such as when pulling a heavy weight. This was adopted by US Marines stationed in China just before WW II, and then later formalized as the official slogan for Marine Colonel Carlson's Second Marine Raider Battalion.

The phrase was brought to the US by the movie ¡°Gung Ho!¡± about the 2nd Marine Raider Battalion during its raid on Makin Island in 1942. But, digging deeper into the phrase shows there is actually no Chinese phrase, gung ho. It is actually a shortened phrase taken from g¨­ngy¨¨ h¨¦zu¨°sh¨¨. Which means roughly work together.