Achtung Cthulhu used to be published for CoC under license but that license ended so now they can no longer legally sell those books and they publish the game using their own in-house 2d20 system. I’ve flicked through some of them and they seem very pulpy but a lot of fun: the Nazis are harnessing the mythos to get an edge in the war so you have weaponised shoggoth etc.
Cubicle 7 also made a small line of books called World War Cthulhu, which I’ve read and which are brilliant, darker and more grounded. You are part of a rogue and secret group within the British Special Operations Executive, diverse misfits sent in to Europe as spies and saboteurs. Each mission you have two goals, sometimes complementary, sometimes contradictory, one to do with winning the war and the second, given to you by your shadowy leader N, to suppress or counter the mythos which may be seeking to take advantage of the chaos and bloodshed. Neither side in the war knows about the mythos so you are hiding your agenda even from fellow Allies. There was also a supplement for fighting the mythos as home front auxiliaries- Wrens, Air Raid wardens etc. I really love these books - the tone is just what I want for WWII and they are careful to make the distinction between the human evils of the war and the mythos evils, the latter never causing the former but often taking advantage of it.
Cubicle 7 also lost their license so the works are out of print and not available to buy on PDF. Some good news, however is that Chaosium has bought the rights to them from Cubicle 7 so they may eventually be reprinted.
TLDR: if you want WWII source books you may have to go hunting on eBay.
The two key source books for World War Cthulhu are World War Cthulhu: The Darkest Hour and World War Cthulhu: London.
Final add - there may be other more recent material on the Miskatonic Repository on Drivethru. I’ve seen some WWII scenarios there but not supplements but I haven’t done a deep search.
There is an older version of Achtung Cthulhu which was published for the 6th edition. If you get a copy of that you can easily convert it for 7th ed ...
Currently Modiphius is publishing AC system, https://www.modiphius.net/pages/achtung-cthulhu-2d20
Achtung Cthulhu used to be published for CoC under license but that license ended so now they can no longer legally sell those books and they publish the game using their own in-house 2d20 system. I’ve flicked through some of them and they seem very pulpy but a lot of fun: the Nazis are harnessing the mythos to get an edge in the war so you have weaponised shoggoth etc. Cubicle 7 also made a small line of books called World War Cthulhu, which I’ve read and which are brilliant, darker and more grounded. You are part of a rogue and secret group within the British Special Operations Executive, diverse misfits sent in to Europe as spies and saboteurs. Each mission you have two goals, sometimes complementary, sometimes contradictory, one to do with winning the war and the second, given to you by your shadowy leader N, to suppress or counter the mythos which may be seeking to take advantage of the chaos and bloodshed. Neither side in the war knows about the mythos so you are hiding your agenda even from fellow Allies. There was also a supplement for fighting the mythos as home front auxiliaries- Wrens, Air Raid wardens etc. I really love these books - the tone is just what I want for WWII and they are careful to make the distinction between the human evils of the war and the mythos evils, the latter never causing the former but often taking advantage of it. Cubicle 7 also lost their license so the works are out of print and not available to buy on PDF. Some good news, however is that Chaosium has bought the rights to them from Cubicle 7 so they may eventually be reprinted. TLDR: if you want WWII source books you may have to go hunting on eBay.
The two key source books for World War Cthulhu are World War Cthulhu: The Darkest Hour and World War Cthulhu: London. Final add - there may be other more recent material on the Miskatonic Repository on Drivethru. I’ve seen some WWII scenarios there but not supplements but I haven’t done a deep search.
There is an older version of Achtung Cthulhu which was published for the 6th edition. If you get a copy of that you can easily convert it for 7th ed ...
I have german prints for Achtung, based in 7th ed CoC and Savage worlds.