Not long ago in an interview Wonky Cai confirmed, with somewhat gloating manner, that U.S. military personnel had stationed in Taiwan. But she may be too young to know the thing happened during the days when American GIs in Taiwan as the ally to ROC under "joint defense treaty". Following reportage may help her reminisce those "happy days".

驻台美军往事：一年犯案2000件，临走打赏700元_风闻 (guancha.cn)   

FYI, the reportage mentions that indelible shame to Taiwan: "Liu Ziran Incident". The incident incited the outburst of pent-up fury from people of Taiwan and induced to a riot of attacking US facilities in Taipei, including the US news agency. Then ROC reimbursed the US with a new place: the former Taipei city council which was located just next to Jian Guo high school. I heard that the place is now the memorial hall of 228 incident.