Misc: In 1944 Battle of the ---------- begins. ?

Questions

Name of the educationalist who rewrote the rules of educating young children?

Near which Bavarian city did the Nazis hold huge rallies in the 1930s?

What form did the Egyptian god Sebek take?

How many olympics have been cancelled due to war?

In the 1980s who was the only non american or european to win the Ladies singles at Wimbledon?