February 27, 1942: Battle of Java Sea begins—Allied ships fail to prevent Japanese landing at Java, take heavy losses. Nazis order construction of gas chambers at Auschwitz. Seattle school board accepts forced resignation of Japanese-American teachers.
Sarah Sundin's blog notes a series of significant events for this day.
The big one, in the context of the fighting, was the beginning of the Battle of Java Sea, which would be an Allied defeat. In human misery and global crime context, the beginning of the construction of the gas chambers at Auschwitz can't help but be noted. And then there's the forced resignation of Japanese American teachers in Seattle.
A grim day all the way around.
The British conducted Operation Biting, an airborne raid on a radar station in France. The raid on Brunvel secured the radar array which the troops took with them when they withdrew by sea, giving the British a first-hand example of new type of German radar. It was a completely successful raid.