It could be really interesting. The soldiers might instill a sense of discipline and loyalty in Harry. They could train him in combat skills early on, making him a more physically capable wizard. Maybe he would have a military - style approach to fighting the dark forces, different from what we see in the original series.
In this fanfiction's plot, Harry's identity as the Boy Who Lived would be intertwined with his military upbringing. He could start a sort of 'wizarding army' within Hogwarts, recruiting students who are willing to fight against the dark forces. His training by soldiers would make him a natural leader in this regard. The story would then revolve around his efforts to build this army, face the opposition from some traditional wizards, and ultimately use this new force to defeat Voldemort in a more strategic and coordinated way.
One possible plot could be that the soldiers instill in Harry a sense of discipline and combat skills from a young age. He might grow up with a military - style routine, which would make his Hogwarts experience very different. For example, he could be more organized in his studies and dueling, approaching them like military strategies.
He would be more disciplined. Soldiers are known for their strict discipline, and Harry would likely carry that into his daily life. He might be more punctual and organized in his tasks at Hogwarts.
In the 'harry potter raised to kill fanfiction', it's likely that the story will subvert the normal image of Harry Potter. Instead of the kind - hearted boy we know, he is made into a weapon or a killer. This could be due to some dark magic influence or a malicious plot from some powerful dark forces. It might also explore how his relationships with his friends like Ron and Hermione would change in such a scenario. They might have to either try to save him from this dark path or even end up being his enemies.
Harry would likely develop a very different personality. He may be more solemn and less prone to the typical teenage angst that the original Harry had. Since he is raised by Death, he might be more in tune with the darker aspects of life and magic from a young age.
Harry would probably be more attuned to dark magic. His upbringing by Satan would expose him to different forms of magic and he would have a different understanding of power. He might be more ruthless in achieving his goals and less concerned about the consequences for others. For example, in the original series, Harry was always worried about the safety of his friends, but in this fanfiction, he might use his friends as pawns if it served his purpose.
Perhaps it could be Thor from Norse mythology. Thor is the god of thunder. So, Harry could have the power to control lightning or storms. He would be a very formidable wizard with such powers. His Hogwarts years would be full of situations where he uses these thunder - related powers to solve problems or fight off enemies.
It could be amazing. Maybe Harry would grow up with a stronger sense of family heritage. He might have access to more hidden magic within the castle walls from an early age. And he could form different relationships with the portraits and ghosts in the castle compared to his original upbringing.