Hellboy and the B.P.R.D.: Saturn Returns #1

From the world of the Eisner Award-winning Black Hammer series comes a gripping World War II action-adventure tale! During the Golden Age of superheroes, an elite Air Force crew called the Black Hammer Squadron bands together to combat the Nazis, a host of occult threats, and their ultimate aerial warrior the Ghost Hunter. This volume collects Black Hammer '45 #1-#4 from the all-star creative team of Ray Fawkes, Jeff Lemire, Matt Kindt, and Sharlene Kindt, as well as a sketchbook section.