This is what I got so far. I just started it today and its a work in progress. Let me know what you think


The 137th Harakon Fire Hawks

Harakon is a planet that got inhabited by the native Harakonies. The planet is very difficult to live in since 70 percent of it is covered by lava. Although the living conditions are bad the recourses and minerals that come from the planet are very good. This is the only reason why the Imperium is interested in this planet is because of its high recourse value. Now, because this planet is so valuable, many other races have tried to invade it and take over. The main races are Tau and Eldar. The Tau need the recources to help make new weapons and to keep their campaign going. This is the same with the Eldar.
Both of them have tried multiple times but have failed because of the Fire Hawks. The Fire Hawks are mainly a get in and get out force. Their job is to make sure that the enemy’s army doesn’t spread too quickly so they like to strike hard and fast to put an end to any possible chance they have of invading the planet. For this reason, the entire army can infiltrate or deep strike. They also are a troop massacre army. What that means is they have a lot of fire support and ordnance blasts to kill of troops quickly. They do this again because they don’t want troops to spread around. This is a good strategy for them since the terrain is very rocky where there isn’t lava.
That’s just the basic back round of the planet. The 137th Harakon Fire Hawks are a basic regiment. They aren’t anything special or different from the rest of the army. The only thing that would be different about them is that they have a couple of lascannons to take out tanks since the main tanks concentrate a lot on taking out troops.
The armor of 137th is red and brown. The main armor is red to blend in to the main terrain that is the world of Harakon. The pants are brown since the ground is practically all rocky. Sometimes gold is on officers and lieutenants who are recognized as being heroic and important.

I think its good fluff.