"Commander, what happened on Tenga VII? Your report was rather vague, and we could have used your warriors at the Eastpoint."
"Apologies, General. En route to the rendezvous point, we received word that one of our scout forces located a lost cache of Astartes wargear. We moved to intercept, and retrieved several dozen nearly pristine suits of advanced power armor from a crashed and nearly buried transport. All unused, but marked with a Chapter badge we have been unable to verify. Our armorers are currently reconsecrating the suits, and searching any info-daemons out before recoloring for the Storm Fists, and issuing to our brothers."
"A lost Chapter? What were their colors, their badge? Perhaps one of my command have information on them."
"We appreciate your assistance, General. They were a charcoal grey, with the mark of a burning book..."