German
We know that when World War I broke out, Germany was still under the rule of the German Empire. During the reign of William I and Frederick III, Germany became one of the best countries in Europe, which made the third emperor William II see the opportunity to compete with Britain. He also hopes that Germany can have a wide range of colonies overseas like Britain. He hopes that Germans can appear in any corner of the world, so his "sunshine policy" is to expand the navy and find opportunities for Germans to enter the world.
William II
William II's behavior obviously touched Britain, which has many overseas interests, so Britain made friends with France and Russia, and the war with Germany was inevitable.
But we all know the result of World War I. When the Germans started to attack France according to the "Schrieffen Plan", they did not get the requirement of a quick decision in the original plan. This led to the endless extension of the war, and the double attack of Britain, France and Russia also made Germany tired of coping and eventually failed. Even if Russia withdraws from the war ahead of schedule, Germany is still powerless at this time.
Germans in World War I
When Germany attacked Britain in World War II, it was natural to avenge its defeat in World War I. Not only that, France, Belgium, the Netherlands, Russia, Poland and other countries became the targets of German attacks, and most of them became countries conquered by Germany during World War II. However, due to the English Channel barrier between Britain and the European continent, Germany did not conquer Britain in the end, but made it survive the most cruel war years.