Brainiac War is a collection comprised of ten datamatrixes from some of the more prevalent drones in Brainiac's Forces. These datamatrixes can be obtained from collection nodes found in Brainiac Incursion sites in Metropolis and Gotham City.
"Brainiac's assault on Earth has strewn wreckage across land, sea, and air. Datamatrices found in the debris could provide Earth's scientists with useful and fascinating information."
"Assuming they haven't had Brainiac's alien technology all along, these bits and bytes you've collected could give Earth's scientists an edge. I'll make sure these get to the right people."