In May 2004, the U.S. Army's official Preventive Maintenance Monthly, a cartoon magazine that instructs soldiers how to take care of their military equipment, published a humourous eight-page spoof of the Harry Potter world.
Army officials visit Mogmorts and learn from Professor Rumbledoore and his staff about proper maintenance techniques for magical gear, including brooms, wands and cauldrons (tip: "PM" in the cartoon stands for "preventive maintenance"):
Many thanks to Army weekend reservist Greg for sending us a copy last year, and sorry for taking so long to post!
UPDATE: This has now become the focus of a possible copyright infringement charge by JK Rowling's representatives and Warner Bros. against the U.S. Army. We'll keep you posted.