Some things are supposed to be sacred in comic books. The Joker is a murderer, Batman is against murder. Daredevil fights for the Justice system and Punisher no longer believes in the justice system. And Steve Rogers is NOT supposed to be hailing Hydra!!!!
At the end of Captain America: Steve Rogers issue number one, Steve Rogers kills Jack Flag and says “Hail Hydra”. If you're like me you're probably thinking that this is somehow an life model decoy (LMD), an alternate reality Steve Rogers that jumped during Secret War, or something wacky like that. Unfortunately, I have some bad news for you. It's been confirmed by both Marvel Executive Editor Tom Brevoort and writer Nick Specer that this is the real deal.
Marvel Editor in chief went on to say,
"His mission is to further the goals and beliefs of Hydra,". "If that involves taking down the Marvel universe, sure. (But) it may not be as simple as that. It’s not like he’s exchanged his white hat for a black hat — it’s a green hat. We knew it would be like slapping people in the face. The idea of Captain America means something very primal and very strong to the people of this nation, and they have a very visceral reaction when you get to something like that. You want people to feel and react to your story. So far, so good."
You're probably wondering why this is good news. The writers and higher ups at Marvel obviously know how important Steve Rogers and Captain America are to not just their franchise, but the country in general. This leads me to believe that this may be a situation where the shock will make people run to buy the Captain America: Steve Rogers arc I hopes that this is just a phase.
Now comes the bad news. For the last five or so years, Marvel has been completely shaking things up with their classic heroes and villains. Wolverine lost his healing factor and died (granted, replaced by Old Man Logan), Cyclops killed Professor Xavier and later went crazy and was killed, Tony Stark is “broke” and running the Avengers in something very un-Starklike, Peter Parker is rich and running his own company, Deadpool is not only an Avenger also funding them, Thor Odinson no longer the God of Thunder and is no longer worthy of Mjolnir, and the Fantastic Four are split up all over the place (Ben in space, Johnny on the Avengers, Reed and Sue fixing the multiverse). So this may be Marvel’s way of getting rid of Steve Rogers or making him a permanent villain.
Long story short, we will have to wait and see what direction this goes. Steve Rogers has been the ultimate good for over half a century and now it looks like we could have all been fooled. But, hey, nothing lasts forever. Steve Rogers was an old man up until recently. So even Steve Rogers doesn't stay the same forever.