Imperial Fists vs Ultramarines
In keeping with the Codex, Marines undertake training missions to keep their skills sharp. To me, this is the only way to explain the volume of Marine on Marine games in 40K. Otherwise, the heresy is out of control.
Crusade (CA 2019)
1500 points
A scaled down version of my Imperial Fists mechanized list, vs Guilleman and a bunch of UM infantry, since they know better than to bring vehicles to an Imperial Fists party.