参考答案：A

解析：理解推断。根据原文“My story began in the years following World War II，when men like my father who had served their country returned home to settle down…”，译文为：我的故事开始于二战之后的岁月里，那时我父亲那辈的男人们为祖国服役结束，回到家里开始过安定的生活。据此可以推断出my father served in World War II。