I absolutely hate the idea of a European Army. It will not happen for a long time.
Besides, what would be the point of such an army? Not like the Europeans have the balls to use force wrapped up in a hippy pacifist mindset especially if it would be led by the Germans.
Edit: Who/what would this army pledge their allegiance to? The British army/soldiers has and always will be her Majesty's Armed Forces and allegiance goes to the crown not to Europe.