He held a moderately high rank among the troops in Vietnam, and, with his IQ of 127, was considered a very valuable officer. But in Taiwan, when he took his physical, he was declared to be of "category 4" health. This would ordinarily have led to compulsory retirement.
何延泰在留越軍官團中已晉身少校指導官，還以一百二十七的高智商備受重視，但到台灣體檢時，卻被打個丁等體位，等於勒令退伍。