Friendly Fire

Five men were taking shelter in the ruins of what used to be a bunker. The ceiling was caved in, and cement slabs with steel supports sticking out were everywhere. The men were the only survivors in what was a huge battle against a swarm of crazed aliens, also known as the zerg. The bunker was located at the bottom of a hill, which was the same hill that the alien forces swarmed over. Most of the hill was covered with alien carcasses, most of which had guts hanging out. Ammo was in no short supply; dead troops were everywhere.

Marty, Stanley, Rick, and Steven were standard marines armed gauss rifles, and were protected with heavy armor. The most valued one of them all was Mark, who operated a flamethrower. The flamethrower was a very effective weapon, as it could hit multiple targets at one time and could penetrate trough alien carapaces easier than bullets.

All five men were resting in the center of the rubble, until they heard a hissing noise from the top of the hill.

“The damn zerg are still here,” muttered Stanley as the soldiers crept up to the side of the bunker, and aimed their guns.

A loose piece of cement fell from its position on the bunker. The loud noise it made when it hit the ground triggered one of the creatures to scream and come charging at the bunker.

“It spotted us. Shoot the ling before it gets close!” yelled Steven.

Simultaneously, the troops fired their guns at the zergling. Blood splattered everywhere, as the bullets ripped through the dark, spiny skin of the creature. With a piercing cry from the zergling, it fell to the ground dead, with bullet holes all over it. Three more of the creatures heard the screech of their comrade, and came rushing down the hill.

With great accuracy, the troops shot down one of the aliens. The other two seemed unstoppable, until they came in range of Mark’s flamethrower. The powerful flames engulfed one of the lings, but to Marty’s horror, one of them dodged the flame and headed straight towards him. The zergling leaped up above the ruined wall, and dug its claws through the front of Marty’s armor.

“Marty!” Rick shouted as he poured bullets into the creature. The bullets ripped through the zerglings flesh, killing it before it could inflict another blow. It was too late; Marty’s wounds were way to deep for him to be alive, with blood rapidly gushing out from them.

“Call for air support!” Mark shouted as he showered another creature with flames. “They just don’t stop coming!”

Steven grabbed the radio equipment and quickly demanded for air support. As he was telling them the coordinates of the hill, he had to drop the radio, and pick up his gun. The ground was shaking underneath him as he tried to reload his gun. The ground started to split open, and he kept fumbling around the cartridge in his hands.

A monstrous, spiny creature burst out from the earth with its two large claws swinging away. Steven stared right into the glowing orange eyes of the creature, as it impaled him with a large spike. Mark watched in horror as the alien dangled Steven‘s body in the air, flinging guts everywhere.

“Kill the damn lurker, Mark!” Stanley shouted.

Mark pulled the trigger on his weapon, and fried the lurker, as well as the remains of Steven. The remains of the charred creature fell on its back, which distracted Stanley. A zergling dashed up behind him and dug a claw into his lower back. Stanley looked down at his stomach, and could see the zergling’s claw and his guts hanging out. He then pulled out a hand grenade, as the zergling raised its second claw.

“Good bye,” Stanley whispered.

Stanley pulled the pin and released the lever on the grenade. He had detonated the grenade in his own hands. The blast killed himself, and the creature attacking him. Shrapnel and debris were thrown everywhere, which knocked down the two remaining humans. Stanley and the zergling laid in pieces scattered around the ground.

There was one remaining alien. Known as the hydralisk, it was a much bigger and stronger creature than the zerglings. The top half of it was spiny, and had a shell like skin on it, while the bottom half resembled a long tail. While laying on the ground, Rick laid fire upon the beast as it slithered down the hill. Mark knew what had to be done. He got up, and ran out to met the creature. Before Mark could unleash flames upon it, the hydralisk turned its head and hurled acid over the man’s gas tank. The acid burned through the tank, and caused a chain reaction with the gas. Both Mark and the monster were killed instantly, as they were swallowed in a ball of flame. All that was left of the hydralisk was a burning exoskeleton.

Rick was the only survivor of the battle. His armor was covered with blood, but to his surprise, it was not his own. Still shocked that he was still alive, he got up and ran on to the hill. His fellow troops fought for the land, so he thought it was his duty to claim it. Once he reached the top, he glanced up into the sky. It was the last time he would see daylight.

Dozens of airships released their load of missiles onto the hill. Every square inch of the hill had to be blown apart to insure the enemies were dead. They were right on target, but just a tad too late.

This is not an insult, but you seem the think, while writing, that people cant think for themself and dont know anything about starcraft.
Which, even if its true, is a bad way of writing. Dont be afraid that people dont get it. you have a clean way of writing so be a little vague on the details.
Dont do this
But do more of this:

It's not bad. I think you almost overdo death, practically killing off everyone in the story. Blood and guts aren't always required for a great short story. Working on your grammar would help, and a deeper meaning would be nice (nice, but not required... but still nice!)

I made it a more violent story because they are not made as often. Even when someone does write a violent story, it is often a very poorly written story.

Also, this story is supposed to be a lot more realistic than fantasy stories, in which no good guy dies.

if you hate that then stop reading lame books like lord of the rings or wheel of time, but start reading the malazan empire serie. It has no good and evil!! its just like our world. Main characters die, get raped and are tortured. its really fun reading!