History on the story: These are a warriors journals, they are written by Ionchor, or Ion for short. He is a soldier under Wing Captain Levi, who is under Wing Commander Siltof, commander of the Golden Phoenix Army. The journals were found by me in a dusty crypt in Ireland. I decided to record them everywhere because it seemed that's what the writer wanted. Ion was writing letters to his dear Mariah, a fair and beautiful lady based upon description. He was fighting in a war that had been raging for 421 years, or P.Y (Phoenix Years). He and the rest of the army were fighting against "The Horrid", a breed of demonic mutations released from Hell, or Deathsimir, as they called it. The goddess of death in their time, Æthana, denied having released The Horrid, but she was accused of it and banished to another realm. The Horrid were tearing up the land, literally, by using World Eaters, large deities that would suck up land and everything around it and leave black holes of chaos behind. King Felix commissioned the army to rid the land of these devils and restore it to its original state. It was easier said than done, only one World Eater had been destroyed, and it was by the Great Mag Xernal nearly 200 years ago from the point in time Ion is in now. He is in the 21st Wing Brigade, and this is his story.
History on the March of Cor: In the first few journal entries, Ion is marching through a barren wasteland called Asamth. The March of Cor is a long terrible journey through Asamth during the long winter month of Cor (it's equivalent to 6 months our time). Wing Captain Levi decided to lead the 21st Brigade through Asamth as it was the shortest route to Torrade, where they will then meet up with several other brigades to launch an attack on a Horrid base. Rumor has it that a World Eater is located there, so they are bringing along Xernas, a decedent of the Great Mage who killed a World Eater years before.
There simply isn't enough written to properly say anything about it. I would recommend making each part at least three to five times as long as they are now. Also, it probably isn't a good idea to have pre-established lore to read before the actual story - it really impedes the storytelling a lot. You would have been better off writing in the history through references in the actual writing. It would give a feeling of actually learning about the setting, and possibly even some characters, and it would give the story more depth overall.