One of the things that made me fall in love with Warhammer 40.000 (from who Space Knights owes a big part of its inspiration) were the "Thoughts of the day" and the many text boxes in its ruleset containing grim quotes or briefs descriptions of the setting even if they had little to do with the battles. I have found that these text boxes are great ways of breaking the wall of text and they make a great deal to create the right atmosphere for the game in a similar way as images but easier to create. 

I have been creating a long list of these and will add them in the ruleset of Super Space Knights with a little heading like this.

And here are some quotes. I have many more adapted from different sources (games, books, historical figures...):

• "The enemy has us surrounded from horizon to horizon and his siege is closing inexorably. We have one trench, sixty-three space knights fit to fight, six boxes of ammunition and a very long night ahead of us" (Last transmission from the Third Company of the Subjugators during the Second Arkiteutis Campaign).
• "Kill with violence! Kill with violence! Kill with violence! Kill with violence!" (Motto of the Assault Companies) 
• "Its weight at full strength is 150 tons. It's not that much, really: 70% of that is ammunition" (Technical report on the TR-4-Delta battle tank model Tetragrammaton).