R&R flights that brought troops from Vietnam to Taipei. But Taipei certainly wasn't the only place for these getaways. Popular spots included Honolulu, Tokyo, Taipei, Singapore, Manila, Penang, Kuala Lumpur and Sydney.
I found a 1967 Time Magazine article titled, "Recreation-Five Day Bonanza." It provides a great overview of the entire R&R program, how it worked and where the more popular destinations were.
I was a little surprised to read that troops arriving in Taipei were supposedly advised to "keep out of the buses or you may lose your wallet." Though these flights ended before I arrived in Taipei, I don't recall any problems like that during 1973-74. There was the occasional burglary, but I never heard about anyone being robbed or having their wallets stolen.
Anyway, it's an interesting article that provides a good overview of the R&R flights.