Also, of importance was the idea of a Greater Germany, supporters hoped to unite the German people under one nation state, which included all territories where Germans lived, regardless of whether they happened to be a minority in a particular territory.
After the Treaty of Versailles, a unification between Germany and a newly formed German-Austria, a successor rump state of Austria-Hungary, was prohibited by the Allies despite the majority of Austrian Germans supporting such a union.
Britain and France then gave Germany an ultimatum to withdraw, which Germany ignored, and Britain and France declared war on Germany on September 3, 1939.
Following the Fall of France in June 1940, the Vichy regime signed an armistice, which tempted the Empire of Japan to join the Axis powers and invade French Indochina to improve their military situation in their war with China.
Two contemporaneous factors in Japan contributed both to the growing power of its military and chaos within its ranks leading up to the Second World War.
One was the Cabinet Law, which required the Imperial Japanese Army (IJA) and Imperial Japanese Navy (IJN) to nominate cabinet members before changes could be formed.
This essentially gave the military veto power over the formation of any Cabinet in the ostensibly parliamentary country.
Another factor was gekokujō, or institutionalized disobedience by junior officers.
It was not uncommon for radical junior officers to press their goals, to the extent of assassinating their seniors.
In 1936, this phenomenon resulted in the February 26 Incident, in which junior officers attempted a coup d'état and killed leading members of the Japanese government.