The prime minister is equivalent to the prime minister. The foreign minister is in charge of foreign affairs, the minister of land and resources is in charge of the army, the minister of ocean affairs is in charge of the navy, and the minister of Tibet is in charge of finance (head of the Ministry of Finance). The Japanese emperor family has a long history, and the emperor has existed almost since Japan's history, especially after the Meiji Restoration. Japan's first bourgeois constitution was promulgated, and the emperor was listed as the first item and deified. During the Japanese Emperor's period, with the "February 26th" mutiny as an opportunity, the young soldiers in the Japanese military department mastered the real power of the country. At this time, the emperor was still the head of state, but he did not have real power. The "September 18th Incident" was completely out of the Japanese emperor's expectation and beyond his control. The contradiction between the Japanese navy and the army you mentioned does exist. Because Japan was divided between land and sea when it made strategic planning before World War II. The former attempted to conquer China and invade Soviet Siberia; The latter attempted to conquer Southeast Asian islands and compete with the United States for Pacific hegemony. In fact, after the battle of Nomenkan, Japan's invasion of Siberia was blocked, and instead, Shanghai and the army all went south to attack. Its navy and army are not subordinate to each other and have many contradictions. In Southeast Asia, it often happens that Japan's own navy and naval forces compete for strategic materials locally, and the internal friction is very serious.