The human soldier could be seen as an exotic being in Equestria. They could share their technology, like basic tools or ways of building fortifications, with the ponies. At the same time, they would need to respect the magic - based society of Equestria. The soldier could also learn from the ponies' values such as friendship and kindness, and incorporate those into their own way of being in this new world, thus finding their place in the fanfic world of Equestria.
Well, perhaps the human soldier arrives in Equestria through some sort of magical portal. Once there, they might have to adapt to the different culture and magic. They could start by learning about the Elements of Harmony and use their soldier discipline to help in times of crisis. For example, when there's an invasion of some dark creatures, the human soldier's knowledge of warfare could be crucial in formulating a defense plan.
The human soldier might act as a mediator between different factions in Equestria. Since they come from a different world, they could have a more objective view. They could also be a source of new ideas, like different ways of training or organizing for defense. And in some cases, they could be a bridge between the human world (if it exists in the fanfic's concept) and Equestria, facilitating trade or cultural exchange.
Well, it could be about a soldier who finds himself in Equestria by some strange means. He might have to adapt to the new environment which is full of ponies with different personalities and abilities. The fanfic could explore his interactions with Twilight Sparkle and her friends, perhaps he helps them in a time of crisis or they help him understand the magic of Equestria better.
MLP Equestria Girls human fanfic often explores unique storylines. It might involve the human versions of the pony characters from My Little Pony in various situations. For example, they could be dealing with high school dramas, friendships, or even some magical adventures in the human world. These fanfics can be a great way for fans to further explore the characters in a different setting.
The main character is surely the soldier. He might be joined by characters such as Fluttershy. Fluttershy's gentle nature could provide an interesting contrast to the soldier's more hardened personality. And of course, Princess Celestia or Princess Luna could also be part of the main cast, as they are important figures in Equestria and could have significant interactions with the soldier.
Once upon a time, there was a human soldier named Jack. He found himself in a strange world full of ponies from My Little Pony. At first, he was confused and on high alert. But as he interacted with the friendly ponies, he learned about their ways. He used his soldier skills to protect the ponies from a group of wild beasts. In the end, he became an honorary member of the pony community.
One common theme is friendship. Just like in the original My Little Pony, friendship is a central aspect. The human versions of the characters form bonds and face challenges together. Another theme is the adaptation to a new world. Since they are in the human world now, they have to adapt to human customs and society.
One idea could be a human with unique skills, like being a great artist, arriving in Equestria. The ponies are fascinated by the human's different art style and the human has to learn about Equestrian art in return. For example, the human could introduce the concept of abstract art to the ponies, while learning about the magical paintings in Equestria.
An old man who has a lot of wisdom from his long life in the human world. He could be a mentor figure in Equestria, guiding the ponies with his unique perspective. For example, when there are disputes among the ponies, he can offer solutions based on his human experiences of conflict resolution.
The human soldier would first have to adapt to the different physical environment. For example, getting used to living among ponies instead of humans. He might also need to learn the local language and customs.
A possible plot could be that a human soldier gets lost in the mlp world. He has to adapt to the new environment which is very different from his own. He could use his combat skills to protect the ponies from a common enemy, like a dragon. As he stays longer, he starts to understand the pony culture and values, and in turn, the ponies learn about human courage and tenacity.