can we just list interesting facts we know here?
Interesting Facts

on D-Day 1944 the allies used barrage balloons which are blimps with metal cables so any enemy planes would crash

The Nazis actually attacked Czechoslovakia first but the invasion on Poland caused the war since Poland had an alliance with France and Britain

At the beginning of WWII, the Soviet Union (Russia) actually helped the Nazis but the Nazis broke the alliance in 1941 when they attacked them

Many countries actually allied themselves with the Nazis because they were afraid of being destroyed and taken over

The allies on the west never got to Berlin in WWII because General Eisenhower was afraid of meeting the Soviets and fighting another war for territory

Julius Caesar was actually illegal because the laws stated that no one was allow to cross the Rubicon River with an army to prevent a war with Italy, both of which Caesar did.

WWII actually even made it's way to Africa when Italy invaded Africa. The allies came to Africa to help liberate the African countries that Italy invaded, and Germany sent General Rommel to Italy with a tank army to help Italy. A lot of tank battles took place in African deserts in Libya between American General George Patton, British General Bernard Montgomery, and German General Erwin Rommel.

Some Japanese admirals swore that if they lost a battle and their ship was sinking, they would go down with it as a punishment so they would do their very hardest in battle.
Some interesting facts:
https://www.businessinsider.com/14-of-the-most-interesting-facts-ever-2013-7
https://www.rd.com/culture/interesting-facts/
Enjoy reading these interesting facts!