After the second Cursed Era, many history books, fantasy tales, and bard chants were created, telling the story behind the Era where many things happened that changed the world forever.
There are several figures portrayed in these stories that got very famous over time. One of them definitely would be Colonel Hera. She wasn't only an intelligent person, nor was reduced only to a powerful warrior. She was an important point for this story for being the guide that would show the path and destiny of those warriors under her command.
If Hera didn't exist, the tale would be entirely different, the paths taken would change, and maybe not a single human would remain to tell what happened at that time.