Oh, how I love the weird things that pop up in military history. I could start a blog just to cover all the odd stuff I come across.
Here's one for you, did you know that in World War II the Imperial Japanese Army built and used aircraft carriers? The ARMY not the NAVY. Of course if you know anything about the Japanese during this war, it makes sense as the army and navy had a real bad habit of not cooperating.
Anyway, here are some links to Wikipedia covering the aircraft carriers.