It is a simple operational game of the German invasion of Crete in 1941.
Per creator (Jim Dunnigan):
"We needed a game for the first issue, and it had to be kind of small. I was
into the origins of air-mobile ops at that time, and felt Crete would be
more suitable than some of the ops Kenney and MacArchur dreamed up in New
Guinea. The battle was well documented and designing it was easy."
(e-mail with Neopeius, 9-5-2011)