I don't own Warhammer so please don't sue me.
Hour seven-Surface of Valnes III defense facility (7 hundred hours, Sol Time)
As the sun crested the horizon a beacon of hope came in the form of a black Thunder-hawk gunship flying over the mountains. The sun's light was almost blinding, and the gaunts cringed back, as someone does when you shine a flashlight in their eyes from two feet away. This gave the guards-men courage and they bravely fought on.
Private Lewis Syler looked up and saw the gunship swooping low over the mountains. He turned away and readied his rifle. He saw the gaunts cringing back and decided to conserve ammo. They seemed duller and less frightening when the whites of their eyes showed clearly. Klane Addams, the squad's sergeant barked an order. He looked up and in the west he saw 5 harridians closing in on them, their large wings beating the air aside as they sped toward their pray. Lewis Syler froze and looked back at the Thunder-Hawk. It was almost to them and he could barely see its two heavy bolters fixed to its nose begin sweeping the ground. The gun-ship opened up on the gaunts blowing them to shreds. Its battle cannon began shooting as it hovered over the battlefield almost a mile above them. Then he saw 10 figures leap out and open parachutes. They began firing on the incoming gaunts, their bolters striking the creatures directly with in-human accuracy. Then out of now where a harridian swooping down rammed the hovering gun-ship. The ship spun around and began to fall. Seconds later the pilot regained control, and fired two hellstrike missiles that blew the 1st harridian apart. The ship regained altitude and fired another volley at the 4 other harridians. It killed two of the retched beasts and fired its lascannons all the while its bolters were probing the ground picking off targets. Then out of know where a 6th unseen harridian swooped down and sprayed its acidic toxins all over the cockpit. The ship spiraled down, bolters still firing. The ship slammed into the solidified lake and made a deafening noise. When the dust cleared fires burned the lake and tyranids screamed as they were dissolved. Guardsmen opened up on the harridians and the combined power of 100s of lasgun shots brought the creatures down, not before one of them sprayed Lewis' squad slightly burning him and killing 4 of his fellows in arms. He screamed in hatred of the horrid creatures that came toward him. He fired his weapon until the magazine was empty, and then crouched down. He grabbed a grenade set the timer and threw it. He heard the explosion and looked at the advancing gaunts. They had been temporarily stopped and his squad was firing like mad trying to thin their numbers. Lewis reloaded his weapon, and joined his squad in their efforts.
Private Jerran Williams was surprised at how little tyranids were getting to the wall. The squads on the wall must have been going crazy. He looked up and saw that an endless flow of termagants and hormagants were being mowed down. It was almost difficult to see the grass in some areas. He scanned the area looking for a target. He had saw the Thunder-Hawk crash and now saw the once magnificent ship broken and shattered on the ground. Jerran saw that a group of raviners where slithering side-to-side dodging weapons fire, their weapons spitting out death. A small worm like creature went zooming by his head hitting a stormtroopers behind the small barricade they had constructed. Jerran re-loaded his rocket launcher putting a krak missile in the tube and setting the fragmentation missile next to him in easy reach. He sighted down the rocket launcher.
"Eat this you snake!" He yelled. The creature looked him in the face. He blew it away.
Mclane ran out with his full guard to greet the space marines who had just landed and were now helping out the stormtroopers in squad zeta. He cued in their sergeant with his comm. link. The marine turned and lumbered over to him.
"Glad you could make it to the party." Said Mclane.
"We are glad to fight under your service." Replied the marine in a low voice.
Suddenly Mclane saw a small figure hiding in the ruins of the wall leap up and fire a rocket from a long rocket launcher at the incoming raviners. The marine turned and saw the figure duck down again. Mclane saw that the figure had been concealed so well that it was almost impossible to see him from either side. Sgt. Velen barked an order to and ran to the guardsmen. Mclane saw the figure deftly fire off another shoot and turn. Velen was in a crouch now and fired his bolter. He signaled the man to follow him. They exchanged a quick word and the guardsmen leaped up and sprinted back. Velen stayed for only a second before standing up and running back to the rest of his squad. Mclane now recognized the guardsmen as the young man who had reported back to him earlier. The boy was cut and bruised. He still wore his crystal necklace. The boy was saluted Mclane who saluted back.
"Request permission to continue fighting sir!" the boy said.
Mclane was surprised.
"Are you hurt?" Mclane asked.
"Sir no sir."
Mclane thought for a second. He looked up and saw that squad gamma was pinned down.
"Go and assist squad gamma, the emperor knows they can use it."
"Sir yes sir!" The boy yelled and sprinted to up the back stairs to the wall and instantly started fighting with the squad. Mclane raised an eyebrow. How interesting. He thought. How interesting.