The interaction can be complex. Magic might be seen as a powerful but unpredictable force by the US Army. Some soldiers could be in awe of it, while others might be skeptical. For example, if a wizard were to use the 'Accio' spell to retrieve a weapon from a long distance during a battle, it could change the tide of the fight. However, there would also be issues like how to control the use of magic within military discipline. There could be rules and regulations set up to govern when and how wizards can use their magic in military operations. This would require a lot of cooperation and understanding between the two worlds.
One interesting crossover could be a story where Harry Potter characters use magic to aid the US Army in a special mission. For example, Hermione could use her knowledge of spells to create protective barriers around military bases. Another could be wizards and witches joining the Army's special forces, using their magical skills for stealth and combat. Maybe Harry Potter himself could be involved in training soldiers to be more perceptive, like how he is in the wizarding world against dark forces.
Obviously, his friends Ron and Hermione would be among the first to join. Neville could also be a key member, as he has shown great courage. Then there might be the members of Dumbledore's Army who are still at Hogwarts. The Weasley twins could also be part of it, using their unique magical inventions to give the army an edge in battle.
Neville would likely be one of the first to join. He has always been brave and has a strong sense of justice. Luna Lovegood might also be part of it. Her unique perspective and knowledge of the wizarding world could be very useful. And then there are the Weasley twins. Their skills in magic and their ability to think outside the box would make them great assets.
He could have found a magical artifact. There are many artifacts in the Harry Potter world that have strange and powerful abilities. It could be that this artifact has the power to create clones. He figures out how to use it, perhaps with the help of Hermione who is good at researching such things. And then he starts creating his clone army.
In a 'gods among us' Harry Potter fanfiction, one possible plot could be that some ancient magic or a powerful spell has brought deities from another realm into Hogwarts. This would create a whole new dynamic as the students and professors deal with beings far more powerful than they are used to. Maybe the gods have their own agendas, like trying to take over the wizarding world or simply seeking a place to hide from their own problems.
In Harry Potter fanfiction involving Draco, Hermione, 'you and us' could mean a lot of things. It might refer to the relationship dynamics between different groups of characters. For example, 'you' could be the reader inserted into the story, and 'us' could be the main characters like Hermione and Draco. It could also be about how different characters interact with each other, like Draco's relationship with Hermione and how an outside force, represented by 'you', might influence it. Fanfiction often explores uncharted territories in the Potterverse, so this could be a really interesting concept to play around with.
One idea could be a crossover where the magic from Harry Potter is used to combat the infected in The Last of Us world. For example, the Patronus charm could be used to repel the Clickers as it is a powerful form of positive magic. Another could be that some of the characters from The Last of Us are transported to the Hogwarts world and have to learn magic to survive in this new and strange place. They could be sorted into houses based on their personalities.
In this fanfiction, Harry might also include some of the Hogwarts ghosts in his army. After all, they have a long - standing relationship with the school. Peeves, for example, could be a wild card in the army. He can cause chaos among the enemies. And some of the older students who have a strong sense of justice, like Cedric Diggory's friends, could also be part of it.
Well, it could be about a new threat emerging in the wizarding world where a droid army is created by a dark wizard who has mastered both magic and Muggle technology. Harry and his friends have to figure out how to defeat this army using their own magic skills and knowledge of the wizarding world.