My brother hasn't played Warhammer 40k since 3rd edition. Now back for 5th, he is still a pleasure to play against.
For his first game in over 5 years, he chose to play his Tyranids. I took my Witch Hunters to the battlefield. You'll note that I took quite a few Space Marine allies from the Revilers Chapter.
I have a lot of Sisters of Battle, but for this match, I wanted to try out both the semi-new Space Marines codex and show my brother my Witch Hunters. Even though I have been building this army for years, he has yet to play against it.
The mission was Seize Ground, with 5 objective markers. I got first turn, and moved rather aggressively up the board. My plan was to contest all four objectives near his deployment zone with my many tanks, and grab the one near mine with a Space Marine combat squad. Check the video to see how it went.