Between 1936 and 1939, the Spanish Civil War broke out, which eventually turned into a fierce conflict between the proletarian forces, led by the Soviet Union, and fascist forces such as Germany and Italy.
The Spanish Civil War was caused by political and social tensions. The deepening rift between the left** and the right-wing opposition eventually led to a full-scale conflict. The left wing ** was supported by the working class and peasants, while the right opposition was supported by the fascist regimes in Germany and Italy.
Germany and Italy actively intervened in the Spanish Civil War, providing substantial military assistance to the right-wing opposition, including soldiers, **, and air support. They tried to overthrow the left by supporting the opposition** and establish a pro-fascist regime in Spain.
At the same time, communists in the Soviet Union and other countries supported the left**, providing it with military aid and support. The Soviet Union sent troops, military advisers and **equipment to Spain to support the resistance of the left flank**.
In the end, the right-wing opposition, with the support of Germany and Italy, prevailed and established a fascist regime.
On November 25, 1936, Germany and Japan colluded with each other to sign the "International Agreement on Industry", also known as the "Agreement for Security and Cooperation". The agreement aims to strengthen cooperation between the two countries, especially in the struggle against communism.
The agreement secretly stipulated: in the event of an unprovoked attack or threat of attack by the Soviet Union, the other side shall not assist the Soviet Union in any way; and without the consent of the two parties, no political treaty contrary to the spirit of this Agreement may be concluded with the Soviet Union.
In addition, Germany and Japan have engaged extensively through diplomatic, economic and military channels. They shared similar nationalist and militaristic ideas and held similar views on the international situation. Contacts and exchanges between the two sides have helped to deepen mutual understanding and cooperation.
From then on, ties between Germany and Japan began to strengthen, and in 1937, Italy formally joined the pact, and the international fascist front of aggression was formed. On September 27, 1940, the three countries signed the Treaty of Alliance, formally establishing a military alliance.