The year is 1936, the Great War that was supposed to end in 1918 had turned into an eternal bloodbath of attrition lasting to this day. Bringing much of the world to ruin from both constant warfare and societal disrepair, becoming the most costly war in human existence, as well as its most threatening. Bringing many nations to near collapse. With unrestricted use of chemical weapons and biological agents created from weaponized Spanish Influenza having been used to kill off a fraction of the human population worldwide. Human civilization finds itself standing at the cusp of total annihilation, hanging on by mere delicate threads.
The Western Front has been bombed, shelled, and gassed to the stone age, devolving into an anarchic wasteland full of roving gangs and survivalist groups who cower in fear as Entente and Central Power bombers fly daily over their heads to keep No Man's Land barely habitual, and their enemies' infrastructure back home in constant disrepair.
The Russian Civil War has brought the country into multiple warring factions fighting endlessly for control over a husk of a former empire. The Stock Market Crash of 1925 has never been fully recovered, crippling the American Dream into becoming a living Jim Crow fashioned nightmare. Vorbeck's Brigades continues to wreak havoc in Sub-Saharan Africa into the modern day, turning the colonies back to their more tribalistic beginnings as authority from their European masters have broken down.
Hitler's NSDAP, Strasser's Freikorps, and the Spartacus League conspire to bring down Kaiser Wilhelm II's empire from within, as Germany's military industrial complex has finally reached the apex of rotting German society from within with civil war looming on the horizon. France and Great Britain as well deal with their own infighting and uprisings domestically, bringing tensions within the Entente to a boiling point of no return.