A short collection of details about how to run various different mythos creatures and deities in a World War Two setting, in the Acthung Cthulhu setting in particular. It also gives some guidance on mass combat and looks at fictious weaponry as well. A brief look at spells rounds out the book. It's good, it's a Keepers book and it's a useful thing to have around. Whilst not indispensable to the genre or even, necessarily the campaign setting, it's still nice to have around. Not indispensable, but still good quality. ( )