The Japanese believe that a strong military force should be maintained and used aggressively to promote national interests and that the military should play a central role in society. The rise of Japanese Militarism in the 1930s was triggered by a serious economic crisis and a weak civilian government.
Japan control started to slip away from the civilian government, the Japanese army acted independently and invaded the resource-rich province of Manchuria in Northern China.
Many Japanese military officers blamed the country's financial problems on corrupt politicians and believed that the only way to get the natural resources they needed was to take them by seizing other territories.
The Marco Polo Bridge Incident, also known by Lugou Bridge Incident or Double-Seven Incident, was a battle between the Republic of China's National Revolutionary Army and the Imperial Japanese Army. It is widely considered to have been the start of the Second Sino-Japanese War
The Japanese military in Tokyo decided to strengthen its position in its invasion of China by moving through Southeast Asia. and the occupation of Indo-China colonies.
In the 1930s the Japanese military established almost complete control over the government of Japan following the assassination of the prime minister, Inukai Tsuyoshi, was assassinated by right-wing Militarists. The Militarists were anti-democratic nationalists, aggressive expansionists who believed that Japan was destined to dominate Eastern Asia. The Militarists assassinated political enemies, persecuted communists and made the decision to invade Manchuria in northern China.