This is a war hammer 40k one shot. Based on my limited knowledge, so if anything is out of place or flawed do tell me.

Brother Captain Solomon of the ultra marine's chapter regarded the elder force on the distance. He unlike some force commanders in the space marines respected his opponents to utmost of their abilities. Therefore took to meticulous habit of analyzing all available military data on his opponents.

Solomon had everything in place until he got a message from the well known Back templars space marine chapter. Saying rather than asking if he would like their assistance.

This would be a headache; the unexpected arrival of the templars ruined his strategy.

He now had to deal a bunch of ZEALOT space marines on one end (zealots even by space marine standards) and bothersome elder on the other. And upon the arrival of Marshal Renal his headache got worse.