Well, he'd probably bring his magical skills to the military. Maybe he could use spells for things like reconnaissance. For example, he could use the invisibility cloak to spy on the enemy, or use the Patronus charm to send messages in a secure way. His quick thinking and combat experience from fighting Voldemort would also be useful in military strategies.
In fanfiction, if Harry Potter joined the Muggle military, he would likely bring his magical skills in a very covert way. For example, his quick reflexes from Quidditch could make him an excellent marksman. However, he would also face challenges like hiding his magic from his Muggle comrades. He might use his magic to solve some military problems secretly, like using a spell to find hidden enemies, but always at the risk of being discovered. This could lead to some really interesting plot twists and moral dilemmas for him in the story.
Well, one possibility is that Harry discovers a new sense of purpose and discipline in the military. He might face challenges like tough training, and make new friends who help him grow as a person.
He'd become more disciplined. The military environment would force him to follow strict rules, which is different from the somewhat loose rules in Hogwarts. His sense of responsibility would also grow as he'd be responsible for his comrades' lives.
If Harry Potter were to join the Marines, it would be a very interesting combination. He might struggle with the muggle technology at first, but his determination and courage would help him adapt quickly. His magical abilities could potentially give the Marines an edge in combat situations, like using magic to disarm enemies or create barriers. Also, his experience with teamwork from his time with Ron and Hermione could enhance the camaraderie within the Marine unit.
There might be a supernatural or magical antagonist, even in a military setting. This could be a dark wizard or a creature that has infiltrated the military for its own malicious purposes. Harry, with his experience in the magical world, would be the key to dealing with this threat, but he has to convince the non - magical military personnel of the danger first.
One possible plot for 'harry joins the military fanfic' is that Harry joins the military to find a new purpose in life. He comes from a troubled background and sees the military as a way to discipline himself. He starts in a basic training unit where he meets all kinds of different people from different walks of life. As he progresses, he discovers a hidden conspiracy within the military that threatens national security. Harry then uses his wits and new - found military skills to try and expose the conspiracy and save the day.
Hermione would likely be one of his allies. She's intelligent and has a strong sense of justice, always having been interested in the rights and wrongs of the wizarding laws. She could provide Harry with valuable research and advice.
Well, it could be about Harry Potter exploring a new world of magic within the coven. Maybe he discovers new spells or magical abilities that are different from what he learned at Hogwarts. He might also meet new and interesting characters who have their own unique magical practices.
If Harry Potter were to join Magneto in fanfiction, it would be an interesting blend of two different fictional universes. Harry's loyalty and courage could potentially influence Magneto. Maybe Harry would try to convince Magneto to use his powers in a more benevolent way. On the other hand, Magneto's experience in fighting for the rights of the oppressed could give Harry new perspectives on the treatment of Muggle - borns in the wizarding world. Their combined forces would surely be a threat to any foe, with Harry's spells and Magneto's control over metal.