Oh, Jack, my kid brother! Is this the end of one nightmare and the beginning of another worse one? Better you should have really died so long ago... than you be my enemy! 
Blackhawk #242 is an issue of the series Blackhawk (Volume 1) with a cover date of August, 1968.
Synopsis for "My Brother -- My Enemy"
Appearing in "My Brother -- My Enemy"
Featured Characters:
Supporting Characters:
- G.E.O.R.G.E. (Destroyed)
Antagonists:
Other Characters:
- Nazi doctors
- Nazi officers
Locations:
- Earth-Thirty-Two
- Washington, D.C. Area
- G.E.O.R.G.E. HQ (Destroyed)
- Blackhawk Island
- Washington, D.C. Area
Items:
- Surveillance camera
Vehicles:
- Curtiss P-36 Hawk fighter aircraft
- War Wheel
Notes
- The Crisis on Infinite Earths: The Compendium establishes the entire issue as taking place on Earth-Thirty-Two.
Trivia
- With the destruction of G.E.O.R.G.E. (and their superhero costumes with it), the Blackhawks return to their original black uniforms.
See Also
Links and References
Look at how sad this is making Batman. You did this.