The news of the war between the Humans and the Volga didn't only attract the attention of the Alliance and the Hunters. It also brought the humans to the attention of many other species in more distant regions of the universe, who were more than a little intrigued by what sort of unconventional warfare the humans had thought of to overcome a civilized enemy in such a short timeframe.
They had the general details, and the humans had enough military forces that they could invade a hundred planets at a time, but the rest of the details were sketchy due to the varied tactics.
The one thing that every species was sure of was that they used a combat suit as the Hunters did, in varying sizes based on their target, and that made them a very scary opponent.