After Lai graduated, he served for two years as a platoon leader. Then, he gained admittance to a foreign language-training institute in the military and went on to another major stage in his studies. In the college, he was like a cat with the cream: reading, listening, writing, and speaking, all in English every day. If anyone spoke Chinese, they were fined.
政戰畢業，做了兩年排長後，賴世雄考上軍官外語學校，又展開另一段學習英文的日子，他以「如魚得水」形容在外語學校的日子：每天讀英文、聽英文、寫英文、說英文，不能講一句中文，抓到就要罰錢。