The significance might lie in its ability to bring real - life experiences to a wider audience. If it's a story, it can make people aware of certain historical or social situations that actually happened.
I'm not entirely sure which specific 'ae watan mere watan' based on a true story you are referring to. There could be many works with such a title. It might be a movie, a song, or a book. Without more context, it's difficult to provide detailed information.
I'm sorry, I don't have specific information about 'watan ka sipahi part 2' full story at hand. You could try to find it in relevant books, local libraries or by asking those who are familiar with this work.
I have no knowledge about the plot of 'watan ka sipahi part 2'. You should look for it in specific cultural resources or from people who are into this kind of story.