The military academy carried out Sun Yat-sen's three policies of uniting with Russia, uniting with the Communist Party and helping the peasants and workers, actively carried out revolutionary propaganda, supported the workers and peasants' movement, fought the struggle to unify the revolutionary base areas in Guangdong and the Northern Expedition, and became the pillar of the national government. In the struggle against imperialism, feudalism and national unity, teachers and students in military academies have established an iron discipline and formed a style of sincere unity and cooperation, patriotism and love for the people, and fear of sacrifice. This is the spirit of Huangpu. Military academy famous soldiers come forth in large numbers with outstanding achievements, which have far-reaching influence at home and abroad and occupy a prominent position in the modern history of China.
Sun Yat-sen should have realized that he had to rely on local warlords to fight against Beiyang warlords in the "second revolution" and "national protection movement" against Beiyang government, which led to the failure of these movements. Because local warlords only care about their own interests, they can't really help Sun Yat-sen to establish an ideal republic. Therefore, Sun Yat-sen needs an army led by him that can carry out revolutionary wars. Later, Sun Yat-sen contacted the Soviets, who wanted to promote socialism by assisting the China Revolution. Sun Yat-sen may really be interested in the socialist system, so he decided to cooperate with the Kuomintang, and the result was the Whampoa Military Academy jointly organized by China and the Soviet Union. Sun saw that "the northern and southern warlords are birds of a feather" through the movement to protect France, so he founded the Whampoa Military Academy with the help of the CPC and the Comintern. These students became the leaders of the Northern Expedition of the National Revolutionary Army.