Note the changes to C&C I am making to this story to make it more realistic:

1) Tank weaponry/ rockets are more effective against infantry than in the game

2) Scrin can attack with their body parts/Scrin Annihilator Tripods/Reaper Tripods can pick up infantry in their tentacles

3) Highly trained infantry (Commando/Black Hand/Zone Trooper/Zone Raider/ Shadow Team/etc) can use a different weapon other than their own

4) Almost all infantry can shoot aircraft. Also almost all infantry (GDI/Nod) carry pistols as backup weapons.

Enjoy!

Command & Conquer: Crossroads Of Fire

Prologue

Scrin High Command

Scrin Mothership

The Scrin Overlord watched from his throne as Scrin glyphs blurred across the screen.

"Overlord, we have invaded Earth twice before. On both occasions we have been defeated. Recommended abort invasion," the Mothership AI reported. The Scrin Overlord pounded the armrests of his throne angrily.

"Ichor-LQ grows freely on Earth. I will stop at nothing to harvest this Ichor and capture Earth. Summon the Supervisor immediately."

"Yes, Overlord." The Mothership AI fell silent for a minute. Scrin glyphs continued to blur across the screen, displaying various intelligence obtained about Earth. Eventually the image of the Scrin Supervisor appeared. He was the Scrin's equivalent of a vizier, the second-in-command.

"Overlord!" The Supervisor bowed. "What are your wishes?"

"Ready the armies. We shall invade Earth again. This time we will succeed."

The Scrin Supervisor was astonished. "Overlord, the humans were much more formidable foes than we realised. We have been defeated twice before. Even in the second invasion, when the Reaper-17 and the Traveler-59 cults were sent in. We request permission to search the galaxy for more sources of Ichor."

The Overlord narrowed his eyes. "Are you questioning my orders?" he snarled.

The Supervisor shook his head fearfully. "No, Overlord. You are right. We should invade Earth again."

The Overlord was satisfied. "Very good, Supervisor. Summon Foreman 371. As the leader of the first invasion, he has gathered sufficient intelluigence on the humans."

"Very well, Overlord."

"And Supervisor? I shall be commanding this invasion myself."

"As you wish, Overlord." The Supervisor's hologram vanished from the screen, to be replaced by the hologram of Foreman 371.

"I am summoned, Overlord." The Scrin Foreman bowed deeply.

"The humans are brave fighters, yes?"

"Yes," the Foreman replied. "I have never seen anything like it. They fight to the last soldier, always. Even when all seems lost, they lead a suicide mission and fight with the desperation of a wounded beast. Their vehicles stand up to ours as well. But, Overlord, our spacecraft far overpower theirs. Our Stormriders strafe their columns. Our Devastator Warships pound their base from well behind our lines. Our Planetary Assault Carriers swarm them and strike them down with lightning from Ion Storms. And our Mothership can level their civilisation in one strike."

"Very well, Foreman. You shall become my advisor."

"I am honored, Overlord." The Foreman bowed and disappeared as well.

"Ready the armies," the Overlord commanded.

"As you wish, Overlord." The Mothership's main display screen blurred with glyphs as the symbols of all the Scrin cults materialized. "All armies ready. Prepare to launch planetary assault craft and Drone Ships."

One by one, the ships drifted into space. They didn't need rockets. Their pulse gravity propulsors could guide them through space, far faster than conventional rocket engines.

And the fact that they threw out the rocket aeons ago.

The Overlord watched them go. "Now there can be no failure…"