One common theme is the use of modern military knowledge in historical battles. For example, a character might use advanced weaponry concepts from the present in an ancient war.
Another theme is the exploration of how military ethics change over time. A time - traveling soldier may face moral dilemmas when dealing with the different values of different eras. For instance, in some historical times, the rules of engagement were much looser compared to modern times.
One common theme is changing the course of history. In military time travel fiction, characters often go back in time with military knowledge or technology to alter battles or historical events. Another theme is the clash of different military cultures. For example, a modern military - trained person might find themselves in an ancient military society and have to adapt. Survival is also a theme. They have to survive in a different time period while dealing with military threats.
Survival is also a key theme. Time - traveling military characters often have to survive in unfamiliar and hostile environments. Whether it's dealing with the harsh conditions of a past war - torn area or facing off against the local military forces who view them as a threat, their military training is put to the test as they struggle to stay alive and find a way back to their own time.
One common theme is changing the past. Fans often write about characters trying to go back and fix things that went wrong in the original 'The 100' storyline. Another theme is the exploration of different time periods within the show's universe. This allows for new settings and character interactions.
The theme of destiny is quite common. Ash may travel through time to fulfill a certain destiny that he was unaware of in his normal timeline. He could be the key to preventing a great disaster in the Pokémon world's past or future. Additionally, the concept of cultural differences in different time periods is explored. He experiences different training styles, values, and ways of life as he travels through time.
One common theme is changing the past. In these stories, characters often go back in time to prevent a tragic event in the supernatural world from happening. For example, they might try to stop a powerful vampire from being created.
One common theme is redemption. Firestar often goes back in time to correct past mistakes, either his own or those of the clan. For example, he might try to prevent a wrong decision that led to a battle or the loss of a cat.
One common theme is self - discovery. As Castiel travels through time, he often learns more about himself, his purpose, and his place in the grand scheme of things. For example, in many fics, he realizes things about his past actions that he didn't fully understand before.
Power alteration is a frequent theme. When characters time - travel in Hellsing fanfiction, their power levels can change relative to the time period they are in. Also, the exploration of lost or forgotten Hellsing history is common. Time travel allows the story to dig into parts of the Hellsing lore that were previously unexplored. For instance, seeing how the Hellsing family started or what the first vampire slayers were like.
Saving the world or changing the future is also a popular theme. Since they have knowledge from different times, they may try to prevent disasters or change events that lead to bad outcomes in their original timeline. This gives the characters a sense of purpose and the story a lot of action and drama.
One common theme is the idea of changing the past to affect the future. Often, the characters think they can make things better by going back and altering certain events.