How did the Germans and the Japanese communicate during World War II?

Answer 1

Through their ambassadors and radio and telegraph communications. Their ambassadors would fly and meet.

Answer 2

This is a simple question with a pretty complicated answer. To give you the short version (the long version is referenced below):

In general, Germany carried out the war in Europe and Africa while Japan waged war in Asia and the Pacific. There were only a few joint undertakings. In particular, Germany declared war on the U.S. after the U.S. declared war on Japan after the bombing of Pearl Harbor. While this is sometimes regarded as Hitler's biggest mistake, leading to the liberation of Europe, Hitler believed that war with the U.S. was inevitable and it would take a while for America to mobilize against him.

Germany and Japan traded materials and information through the Yanagi missions. Germany needed supplies of metals, rubber and some medicines; Japan needed optical glass, steel and mercury. Both countries were interested in technological advancements and new weapons. Cargo ships were used at first for these missions and later trades were made by submarine. The missions were often lost to Allied patrols.

Both Germany and Japan had operations in the Indian Ocean. Germany tried to disrupt shipments of raw materials from India, but had no bases; Japan captured the Dutch East Indies and British Malaya in 1941/1942. Germany then sent U-boats to be based at Japanase-controlled ports.

If you were just looking for a basic "how" answer, my guess would be via radio and telegraph, just as the Allies communicated across the ocean.

Answer 3

As powers not at war they would have had ambassadors in each other's countries relaying messages sent in code.
Otherwise they would have used coded radio directly.
Churchill and Roosevelt and an international phone line that was scrambled by a record which added crazy noise to their speech. At the other end they had an opposite pressing which removed the noise.

Answer 4

The Germans and the Japanese are both very intelligent people, so each had interpreters of their respective languages.

How did the Americans and the French communicate? We learned French (a dead language ☺),

Answer 5

Ellen M said it all!!!!