Well, one possibility is that Stiles could be facing some inner turmoil at home or in his personal life, and joining the army becomes his way to find purpose and discipline. He might start as a clumsy recruit but gradually grow into a strong and reliable soldier, making new friends and facing various challenges along the way.
In this fanfic, Stiles might be forced to join the army due to some external circumstances, like a threat to his community that can only be countered with military support. At first, he struggles with the strict military regime. However, as time passes, he adapts and uses his wits to improve the situation for himself and his comrades. He might even form a romantic relationship with someone in the military, which adds another layer of complexity to the story.
There could be a tough drill sergeant who acts as a mentor and a source of conflict for Stiles. This character would be strict but fair, and would push Stiles to his limits.
Well, one possibility could be that Hermione uses her vast knowledge to improve the army's strategies. Maybe she comes up with new spells or ways to defend against dark magic threats that the regular military tactics don't cover.
Well, it could be that Harry joins the army because he feels a need for a new purpose in life. The story might show him adapting to the strict military discipline. Maybe he'll be part of a special unit and be involved in some sort of mission to save the world in a different way than he did before. For example, instead of using magic directly, he might use his strategic thinking and leadership skills he's developed over time.
Maybe Bella has some personal growth. She could start as a timid person and the army experience makes her brave. For example, she overcomes her fear of heights during a training exercise.
Well, perhaps Percy could be disillusioned with his current situation in his normal world. He might see the chaos army as a way to break free from the constraints he's felt. He could start off as an outsider in the chaos army, having to prove himself.
In the fanfic, perhaps Bella joins the army because she wants to protect her family and friends in a more proactive way. Jasper, on the other hand, has his vampire instincts and abilities which make him initially skeptical of Bella's need to join the military. As Bella goes through army training, she discovers new aspects of her own courage and tenacity. Meanwhile, Jasper starts to understand that this is Bella's way of growing and evolving, and he begins to support her by using his own skills to help her train better in secret, which in turn deepens their bond.
One possible plot could be that Percy, with his battle experience from the Greek world, quickly rises in the ranks of the Chaos Army. He might bring new strategies inspired by his demigod training, like using the element of water in unexpected ways during battles. His loyalty and sense of justice could also lead him to take on difficult missions for the Chaos Army, such as infiltrating enemy camps that are otherwise impenetrable.
One possible plot could be that Stiles and Derek's relationship has developed over time. Stiles discovers he has a son, perhaps from a past encounter he didn't expect to have consequences. Derek, being a werewolf with a strong sense of family, steps in to help Stiles raise the child. They might face challenges from the supernatural world, like other werewolves or creatures who see the child as a threat or an opportunity. And along the way, their relationship deepens as they bond over the care of the son.
The plot could revolve around their journey to become good parents. Stiles would probably start reading a lot of parenting books. Malia, on the other hand, might be worried about how her werecoyote nature could affect the baby. They could go on a quest to find a way to ensure the baby is born healthy and normal. Along the way, they meet other supernatural beings who offer advice or warnings. This makes them even more determined to protect their family.
The plot could revolve around Stiles' journey to become the lead dancer in a production. He has to compete with other talented dancers. Stiles trains day and night, sacrificing his social life. Along the way, he meets a mysterious person who gives him some unique advice on his dancing technique, which helps him stand out.