Indeed, as well as the entire 1000-man Marine 4th Regiment, the fabled *China Marines* posted in Shanghai following the Boxer Rebellion until the very dawn of WWII in December of 1941. Some of their intelligence reports and analyses remain classified to this day, as for example their reports on the Japanese occupation of NanKing/Nanjing in 1937.
If you're not familiar with the saga of Captain Billy Port's Ride Across China, you should check it out. It's one of the greatest stories in the history of that elite organization, and is relatively unknown outside the USMC officer corps.
