Sure. 'The Soldier's Supernatural Quest' is quite popular. It combines the elements of a soldier's discipline and the mystery of the supernatural world in an interesting way.
There is also 'Soldier Among the Supernatural'. In this fanfiction, the soldier character gets involved in a series of supernatural events that test his courage and combat skills. The author does a great job of creating a vivid and exciting story world.
One popular 'Percy is a soldier' fanfiction could be 'Percy's Military Odyssey'. It often shows Percy using his unique skills in a military setting, facing various challenges and forging strong bonds with his comrades. Another might be 'Soldier Percy: The Battlefront Chronicles' which details his heroic deeds on the battlefield.
There's a fanfiction called 'The Soldier's Log' in this genre. It details the life of a soldier through his reports and also includes some interesting interactions with other characters in the fictional military setting. It gives a very realistic feel to the military life.
Well, I really like 'Merlin and the Soldier's Code'. In this fanfiction, Merlin has to balance his identity as a sorcerer with the strict rules of being a soldier. It's fascinating to see how he navigates the two worlds. 'The Gallant Soldier Merlin' is also good. It focuses on Merlin's heroic deeds as a soldier and how his friends react to his new role. And don't forget 'Merlin, Soldier of Magic' where his magic becomes a crucial part of his soldiering life.
There's also a fanfiction called 'Soldier Bella: A New Beginning'. It focuses on Bella starting her life as a new recruit. It shows how she adapts to the strict military discipline and overcomes her own weaknesses. The story is quite engaging as it portrays Bella in a whole new and strong light.
One more to consider is 'Among the Female Soldiers'. It delves into the relationships and camaraderie among female soldiers. It shows how they support each other in a male - dominated military environment.
There's 'Winter Soldier: A New Hope'. This fanfiction gives Bucky a chance at a new start. It has a lot of action and emotional moments. And 'Winter Soldier in the Shadows' is quite good too, exploring his stealthy side and how he uses it to protect those he cares about.
I also like 'Merlin Among the Soldiers'. It's a story that focuses on Merlin's journey as he disguises himself as a regular soldier while still using his magic secretly. The author does a great job of creating tension as Merlin tries to keep his identity hidden from his comrades while saving them from various threats.
One of the popular Soldier Boy fanfictions is 'Soldier Boy's True Colors'. It peels back the layers of his tough exterior to show his more vulnerable side. 'Soldier Boy's Quest for Peace' is also quite good. It follows his search for inner peace in a world that has been so cruel to him. Additionally, 'Soldier Boy and the Supernatural' combines his story with elements of the supernatural, creating a very engaging read.
You can try searching on popular fanfiction websites like Archive of Our Own (AO3) or Fanfiction.net. These platforms usually have a large collection of Supernatural fanfictions, and you might be able to find the 'Good Little Soldier' one by using the search bar and typing in relevant keywords.
There's 'Bloodline Rivalries' which focuses on the conflicts between various supernatural bloodlines. It has a lot of action scenes and also explores the politics within the supernatural community. It's really exciting to read as it shows the power struggles in a very vivid way.