Reinhard Heydrich was one of the most vicious of the Nazis. So much so that the Czechoslovak and British governments decided that he needed to be eliminated.

The Japanese execute their attempted ambush at Midway, and it fails catastrophically.

The US Navy sent two of its carriers into the southwest Pacific to thwart the Japanese campaign to take New Caledonia and isolate Australia. The Japanese responded by sending two of their own. The carriers engaged each other in the Battle of the Coral Sea.