邮票服务于谍报战,最早见于第一次世界大战,到了第二次世界大战已达到炉火纯青的地步。在中国的抗日战场上,邮票谍报战的激烈程度丝毫不亚于万里之遥的欧洲战场。1939年底,国民党军队在广西南宁附近集结兵力,准备反击盘踞昆仑关的日军第五师团等部。为了防范日本特务刺探情报,军统加强了包括邮件检查、电话监 Stamp service in espionage warfare, first seen in the First World War, to the Second World War has reached a blaze of blaze. In the anti-Japanese battlefield in China, the intensity of the stamp escalation war is no less than that of the European battlefield that is miles away. By the end of 1939, the Kuomintang troops gathered their forces in Nanning, Guangxi Province, preparing to fight back the Japanese Fifth Division and other ministries that occupied the Kunlun Pass. In order to prevent Japanese spies to spy on intelligence, the military unification has stepped up inspections including mail inspection and telephone supervision