This contains major plot spoilers for Wonder Woman so proceed at your own risk.
What is Dr. Poison giving General Ludendorff that helps him get stronger and she says will help restore his strength? I understand the whole idea was to make him look like Ares and she was helping him get his strength back, but when it is revealed he isn't Ares, this just raises more questions.
My initial thoughts were it was some kind of adrenaline which is how he was able to crush the revolver he held right after, but it doesn't explain why his face glowed. Did I miss something that revealed what this was?
Edit: I heard a theory that it might be a precursor to Venom (Used by Bane). I will keep this open to other theories and possibilities until an answer is presented from the director or cast.