Pursuing a policy of domestic stability, soldiers were trained to fight and work for the settlement of internal strife.
第一次東征時的淡水之役，蔣校長要挑選一批敢死隊，就對同學們說：「志願擔任敢死隊的，請向前走三步。」結果所有學生全部向前跨了三大步。淡水之戰告捷後，接著展開棉湖血戰。