Prologue on the Battlefield (戦場のプロローグ Senjō no Purorōgu?, lit. Battlefield's Prologue) is Mission 01 of Macross Δ. A preliminary version originally aired as Mission 0.89 on December 31, 2015 at 18:00 JST on Tokyo MX and BS11 as a TV special called Macross Δ Episode 1 Prefetch Edition (『マクロスΔ（デルタ）』#1先取りエディション Makurosu Deruta Dai-ichi Sakidori Edishon?) and it aired again on April 3, 2016 with some changes to the animation as part of the main run of the series.