I'm not as familiar with the DC Universe as I'm with MK but now that I checked the
Blackhawk's Wikia page, their weapon is stated to be "Colt .45 automatics" -- the picture, in one of Ed's tweets, that showed an employee's desktop with different folders,
also had a folder named "Colt45". Now, how could the Blackhawk Squadron connect to the game's plot? They fought against Nazis, correct?
The regime's flag is obscure, but finding out its meaning could reveal something. Back in the summer 2012, when the regime symbol debuted, I quickly connected it to
the Nazis and Kryptonians.
Wonder Woman's chest piece has some resemblances with the national socialist symbol, though it's almost similar to that of her Nu52 costume. However the below points are more noteworthy:
1) The angularity, the colors, the big circle and the red background of the regime flag all remind of a Nazi flag. Red represents "courage" -- a subject Superman talks about in the trailer "A New Regime".
2) The black object on a red circle could refer to a solar eclipse on a red sun, implying that we could potentially get more Kryptonians or Darkseid with his planet. Black represents the unknown i.e. foreign threats.
3) The gold color, representing value and luxury, in the diagonal pieces could refer to the structures of the regime's HQs -- the shape could be that of a skyscraper.
4) Finally, what kind of a fictive war game settles with two belligerents? The trinity appearing all over the logo would strengthen the theory of an extraterrestrial threat. Well, this is all my speculation.