Rule 5: When making a reinforce wall, layers are not to be made out of Space Marines.

"Alright, just two more layers to go after this one, and the Hive City will be open to capture." The lead rebel explained as he finished setting up the plasma charges.

"You know, you'd think there would be some Space Marines here by now, this is an important planet after all."

"You're right, this is really suspicious. They sent out a message like, two years ago? And wasn't there a Space marine chapter nearby?" Questioned the lead rebel, while checking over the charges.

"Well, this is the Imperium. If they managed to react that fast, it would be a fucking miracle."

"Oh come on, the reaction time isn't that bad."

"The reaction time is why I joined! It took them a century to respond to those long-ranged blue bastards! And that was a fast reaction time! So there is no way a Space Marine chapter could be here already."

"Well, I guess your right, but that's still depressing. Anyway, I'm about to blow the charges." He said, leading the group back away from the radius. And without even a countdown, he clicked the button, the wall vaporized in a ball of plasma, "Now only two more layers to... what the fuck?"

As the plasma cleared, the rebels saw large figures of black and gold standing upon each others shoulders. The silence that followed was deafening, before it was broken by the sounds of bolters rising up to point at the rebels, "Ready! Aim!"

"Can we talk about this!"

"Fire!" The lead rebel made a noise of some kind, though it was not heard due to the flood of bolter fire. And this, the rebellion of Sygon IV was quelled. The chapter was later chided by the High Lords themselves on the reckless and dangerous tactics employed, after all, it would have been embarrassing to have the chapter extinct due to 'buried in a wall'.