Prewriting Fun

So for those who keep up with my life, I am writing a novel. Now as part of the writing process, before I write in my novel each day, I prewrite something. I have a separate word document for all my pre writing. Now I just usually write whatever comes to mind. Most of the time I am writing parts of my novel. I've addressed this before.
By request by my lovely Emmy, I am posting my new prewriting post. This is a star wars prewriting I did because I like Star wars.

Blaster fire forced the small squad of republic troops into the narrow corridor in the back of the base. Replacing the power pack, Lorak Tindartossed aside a empty one, it harmlessly bounced across the floor illuminated by the bright bolts of blue and red. Sith warriors and troopers had breached the base's defenses several hours early and the last troopers in the corridor were all that remained between them and the new defense plans laid out by the Jedi council. Lorak poked his head out to get a glimpse of how many where there.
A total of 20 he could see and three sith warriors. Damn he thought.
The squad had whittled down the Empire's force for hours but orginially there had been about one hundred of them and enough weapons to keep them at bay. Blasters and rocket launchers worked wonders on the enemy, taking down not only down normal troopers and droids but sith warriors as well. However, it been a bad shot or two that had destroyed their defense turrets allowing more to push through the gates.
Lorak leveled this blaster carbine at one trooper in front with a large heavy blaster and with four successive shots, sent the trooper down on the ground. Not that it made a difference to his comrades, most of who just walked over the corpse. Two warriors made their way to the front to provide cover from the barriage of blaster fire. Nodding to one of his squad members, Lorak watched as his team member lift up their last heavy weapon and fire it. It collided with the two warriors whom had been concentrating more on the blaster fire.
Great! Two less we have to worry about.
He peered down at his own armor. The last one who had been close had killed four members and almost cut off Lorak's arm.
Poking his head back up above the crate, he waited for the smoke and dust to clear. He couldn't make out anything in the debris for a second before noticing a pair of two red glows. He growled at the realization the two survived.
“troopers! Concentrate fire high and low on the two warriors. Take them out. Any gernades perpare to throw.”
A clattering of weapons formed behind him as he swtiched from a single fire to autofire mode on the gun. In an instant the air was a flash of blue as his whole squad fire at once at the warriors. One warrior attempted to block the bolts with his lightsaber, meeting a disater as several hit him square in the chest and in the legs. The warrior dropped his guard allowing Lorak to shred his armor with the blaster. The other warrior threw up a force defense and the blots reflected back, missing any republic souls.
Concentrate on the one now! Gernades throw!
Along with the blaster bolts, a mixture of frag and cyro grenades flew towards the sith warrior. Premature explosions and misses took down troopers

I regard any grammatical mistakes as part of the writing process especially the part that allows me to. Enjoy.