Some common themes could be Naruto characters adapting to the US Army's discipline. For example, Naruto's determination in the Naruto world might translate to his eagerness to succeed in military training. Another theme could be teamwork. In Naruto, teamwork among the ninja squads is crucial, and in a US Army - Naruto fanfic, it could be about how Naruto and his friends from the series work together with US Army soldiers on missions. Also, there might be a theme of cultural clash, as the ninja culture from Naruto meets the military culture of the US Army.
One common theme is the power dynamic. Naruto characters are often powerful in their own right, with unique abilities like ninjutsu. In a fanfic with the US Army, it could explore how these powers are used in a military context. For instance, Sasuke's Sharingan could be used for strategic purposes in a battle. Another theme is loyalty. Naruto is known for his loyalty to his village, and in the fanfic, it could be about how he and other characters show loyalty to the US Army unit they are part of. And of course, the theme of friendship might still be there, as Naruto makes friends with the US Army personnel.
One common theme is survival. Just like in The Last of Us, the characters often have to fight for their lives in a harsh environment. And Naruto characters bring their own skills to aid in this survival.
A common theme is adaptation. US army characters have to adapt to the new rules and environments of the crossover world.
Another theme is the adaptation of technology. How would US Army soldiers adapt to using lightsabers or Star Wars blasters? And vice versa, how would Star Wars characters use US Army weapons like rifles? This exploration of technological adaptation is quite popular in such fanfictions.
A common theme could also be patriotism. As a US Army Ranger, he might be shown to have a strong sense of duty towards his country. Additionally, the stories might explore how Harry's past experiences, perhaps from his original story context, interact with his new role as an Army Ranger.
One common theme is mystery. Since the game is about finding the impostors, fanfics often revolve around solving the mystery of who the impostors are. Another theme is survival, as the crewmates need to survive the attacks of the impostors.
One main theme is leadership. Naruto has to step up and lead the newly - found army. He has to make decisions and inspire the members. Another theme is unity. The army, which may consist of different types of people or beings, has to come together and work as one. For example, if there are members from different villages in the army, they need to put aside their old rivalries.
A common theme could be self - discovery. Clark might learn more about his own strengths and weaknesses in the military environment. Another theme could be friendship. He'll surely form bonds with his comrades in the army.
One common theme could be the challenges of pregnancy while the husband is away on military duty. It might explore the emotional struggles of the wife during this time.
Well, in these fanfics, the theme of loyalty is often present. The female clones are loyal to their comrades and to the cause they are fighting for. Another important theme is the exploration of femininity in a military context. How do they maintain their femininity while being tough soldiers? And the theme of discovery is also there, as they discover new abilities within themselves and new secrets about the clone army as a whole.
Naruto could be a special forces type of soldier. His high energy and determination would make him excellent in combat situations. Sasuke could be in an intelligence role, using his Sharingan to gather information. Sakura, with her medical skills, would be a great field medic. They could all fit in as part of a special unit within the US Army.