I like Wrath. I like it a LOT. It isn't a verb, but it fits.
I wrote a small story on the Nomads, from their conception (when they were being shipped to a prison world), to their end (towards the end of the Seraphim War), but it is very extravagant, childish and overall probably violates the canon so many times over it could be considered statutory rape. It also probably contains a lot of the same adjective/adverb repeated over and over again ad infinitum. It's very old.
But yeah, the Nomads have a home world... And that's about it. Their home world is ravaged by several hundred/thousand years of conflict, is overpopulated and is covered in warring factions, kinda like the Infinite War in a bottle. The faction as we know them now escaped their homeworld on a fleet of rag-tag ships, and ended up attacking outlying worlds and stripping them of technology, resources and information. Their fleet eventually snowballed into something rivaling the Seraphim in sheer number and firepower, and they end up a major galactic power.
Any worlds they visit are generally left barren by the time they are gone, the most they will leave behind are a few automated satellites or some such to monitor the world, as well as a few abandoned units and structures. They aren't exactly precise in military terms.
Edit: Ah, yup. I probably used the word 'generally' over fifty thousand times in my story.