It is not yet known when the Japanese began to bring in women from the colonies of Korea and Taiwan, but Chu Te-lan believes that the Japanese military first began using large numbers of Taiwanese comfort women after the attack upon Pearl Harbor brought the United States to war against Japan. The savage side of humanity "By the time I got to Kaohsiung it was already turning to daylight.
日軍開始強制徵調朝鮮及台灣殖民地婦女充當慰安婦起於何時，目前還有待進一步的研究，但是根據中研究朱德蘭的推估，在一九四二年「珍珠港事件」後，台灣正式投入二次大戰戰火，也是台灣慰安婦大量被徵調之時。