I don't think you should feel guilty. You were lied to, and that isn't on you. You can absolutely be angry at them, since they're the ones who did this to you. But your conscience can be clear since you were lied to. We were all lied to. Your buddies were lied to. The blood in not on your hands. It is on theirs, and we all turn our gaze at them now. All of us, military and civilian alike, we know who did this, and we are looking at you. And we are coming for you. They will pay for the blood they shed and the lives they ruined. They will pay in this life and in the next.