That Day:
I remember. I remember when their contraptions fell from the heavens. I remember when the sky was on fire as they came in their hundreds, to face thousands of us. I remember my friend saying the invaders were just men and we didn't have to fear. Most of us believed him and followed him to defend our homeland, with smiles of courage and valor. We were WRONG.
I remember these "men" had punched holes into the trenches we built, laying waste to our fortresses we labored for so long to erect, and they tear them down in a day when it took us nearly weeks to do so. I remember as dozens of men dropped, dropped, to murderous gunfire. I remember how they exploded in front of me. I remember seeing a wounded man with a missing leg to a single bullet. I remember how my friend was vaporized by stream of bright light.
Minutes become hours, hours became days, and days became weeks. They tore the world apart. The world was raped by their destructive touch. When it was the last day, I saw one of these " men " myself. He was huge and towering, covered in thick armor. His shoulders were protected by massive pauldrons, and his face was covered in a helemt shaped like a grinning skull. He carried a massive gun in one hand, and a sword in the other. It was a knife compared to his size, but it was a sword of heavy metal. When he ended my life, I realized something my friend couldn't.
These were no men.
After the final victory, the eagle was above the mighty ruins. And carrying the banner of the eagle was no man. But a Space Marine.