Executor, I want to note again how strongly I feel that the tenets do not cover this kind of field work. The real battle is back home, in the heart of the City, in the people of the Tower.
In any case, as you requested I've made a detailed study of the Cabal command structure aboard the Dreadnaught. Detailed notes are enclosed, but suffice it to say their normally robust military engine has found itself hopelessly mired aboard Oryx's fortress.
Our assaults on Cabal leadership in-system has had a devastating impact. The Skyburner's Primus, his bond-brothers, Valus Ta'aurc, Valus Trau'ug, Primus Sha'aull, and a smattering of lesser Vals and Bracuses... all dead or on the run, all thanks to us.
In short, I believe your supposition is correct. The Empire will have no choice but to respond.