Don't forget 3.OCT.11
In the fifth Fullmetal Alchemist book, the character Winry Rockbell opens the pocketwatch of Edward Elric, the Fullmetal Alchemist. She finds etched inside: 'Don't forget 3.OCT.11'. On that day, Edward and his brother Alphonse burned down their house, to signify that they would never turn back from their journey to recover their original bodies.