 "Turn A" is the is the universal quantifier used in discrete  mathematics: meaning that the Title of the Series is actually "For  All Gundams". This is proven throughout the Series, as it is  eventually revealed that the "Dark History" of the Correct Century  is a combination of Tominos Universal Century, as well as the  Alternate Universes of "Kidô shin seiki Gundam X" (1996), "Shin kidô  senki Gundam W" (1995) + Shin kidô senki Gundam W: Endless Waltz  (1998) (V) & "Kidô butôden G Gundam" (1994).