combat veil

“Dresden!” River said sharply. The Sasquatch set me roughly on my feet and pointed.
I looked. The building on the south side of the street, where the Einherjaren snipers were set up, was mostly shrouded in darkness, but I could see well enough to glimpse the shapes of dozens of octokongs that had somehow circled the brick building and were climbing toward the roof, from the rear side, their tentacles probably leaving giant sucker marks on all the windows.
“Think you can handle them?” I asked him.
River set Ramirez down more carefully, his dark eyes just a ferocious gleam beneath his heavy brows, and bounded off in that direction, vanishing behind a veil as he went. A minute later, something grabbed one of the lowest octokongs, whirled it in a circle, and smashed it like a water balloon against the ground. I could see the blur of a form as it leapt a good fifteen feet up the side of the building, and dust exploded from the bricks, presumably from River Shoulders digging his fingers into them to get a good grip. He started climbing the building, seizing octokongs from behind and either smashing their skulls against the bricks or simply throwing them off and letting them fall to an ugly death.
Couldn’t have happened to a nicer bunch.

Battle Ground Chapter 14, Page 139