Full Metal Alchemist Don't forget 3 Oct 10 Pillow

3rd October 2011. It's the day that Edward Elric and Alphonse Elric left to join the military so they could get their bodies back. It's so they would never look back and remember the decision they made. This meant becoming State Alchemists in order to gain access to the knowledge and resources needed to reserve the ritual that nearly destroyed them. By joining up with the military forces, they could be called on to fight in a war on the government's behalf. This is their way of remembering that they gave a lot up for the chance to regain their bodies, in case they ever start to doubt their original objective.