Nanoha in StrikerS
In StrikerS, Nanoha is 19 years old and now an Aerial Tactics Combat Instructor of the HQ Armed Forces with the rank of a Captain. She enlisted at the 6th Mobile Division of Time-Space Administration Bureau's Special Management, to aid Hayate. She's the Tactics Combat Instructor for the said unit and also the commander of the "Stars" squad in the field, she has grown more mature over the 4 year time gap between A's epilogue and StrikerS. Nanoha, like Fate, is a S+ class mage without limiters, which is the third highest rank possible to be achieved by a mage (the two above are SS and SSS). She and Raising Heart wear limiters while in the 6th Mobile Division0 because of the rank compatibility rule. While serving in Riot Force 6, she and Fate shared a dorm room together.
She is first seen in the season with Raising Heart Exelion, and checking the field for Subaru and Teana's examination. After the pair reach their goal Nanoha comes in transformed to stop Subaru and Teana from crashing. After gathering the members of the newly formed Riot Force 6, Nanoha begins to train the new recruits, Subaru, Teana, Caro and Erio (who have both taken in by Fate). Later in the season, Nanoha becomes Vivio's guardian or as Vivio calls her; Mama, and looks after Vivio along with Fate who is her godmother (Nanoha later officially adopts Vivio). Near the end of the season, Nanoha along with the rest of Riot 6, besides the forwards, Signum and Fate, deal with the Saint's Cradle going into orbit. Nanoha enters the cradle, along with Vita, and they split up, with Nanoha going to the Throne Room and Vita going to the engine room. Nanoha quickly deals with one of the Numbers, using her Blaster System, before entering the Throne Room, where Vivio is being held. Quattro manipulates Vivio, forcing Nanoha and Vivio to fight each other, during the fight, however, Nanoha uses a wide area search and finds the place where Quattro is hiding and, using her Divine Buster and her Blaster System at level 3, knocks her out by blasting a hole through the cradle. However Vivio still does not revert to her normal self and continues to fight Nanoha until Vivio manages to begin to regain control, but still cannot gain complete control, and Nanoha is forced to use her Blaster System at Full Power, firing five Starlight Breakers at the same time, which then reverts Vivio back to her normal self. Later, Subaru and Teana come in to save Nanoha and Hayate (who came to save Nanoha). In the epilogue of StrikerS, Nanoha was offered many promotions, all of which were turned down in favour of her current position as a combat instructor. She now also lives with Vivio, and checks up on her every so often, even when she is in class.
Before StrikerS, it is apparent that Nanoha's magical ability has increased at an accelerated rate via intensive self-training, in addition to the strain resulting from repeatedly channeling the additional magical energy from the cartridge system added to Raising Heart in A's, it eventually resulted in Nanoha's body suffering very severe internal damage that revealed itself during a near-fatal incident which was depicted in the manga. Nanoha was hospitalized for some time as a result of it, and her doctors originally feared she would never be able to fly or even walk again. Eventually, however, she did recover enough to resume active duty with the TSAB. As a result of this, she has intentionally designed the 6th Mobile's training regimen to ensure the same thing will not happen to the members of the StarS and Lightning squads.
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