Ep. 2: Riot Force 6

2

Subaru and Teana are informed that they have failed their promotion exam, but are given another chance by Nanoha and Reinforce to take the exam again in a week. In the meantime, they are told about the Sixth Mobile Division, which is a special division about to be formed and led by Nanoha, Fate, and Hayate and are asked to join. Erio and Caro make an appearance and meet for the first time. At the end we see Vita, Shamal and Zafira destroying gadget drones and talking about the new unit. (Source: Mahou Shoujo Lyrical Nanoha StrikerS Wiki)