Kurtz is a marine corporal of the Alliance. A week after an Alliance team uncovered protoss ruins on Dylar IV, Kurtz was sent as part of a force to set up a camp to study the ruins. A couple of weeks after that, he was informed that the ruins were being turned over to the protoss. Although he was disappointed that the ruins were being turned over before the Alliance's own studies were completed, he was willing to go along with the order.
Kurtz found himself giving the previous team a tour of the Alliance camp, which was currently being prepared for the protoss dignitaries. However, it came under attack by rogue protoss forces, under the command of the Dark Templar Miratix. Kurtz was one of many which fought to defend the camp.
He was probably named after Colonel Walter E. Kurtz, the antagonist of the film Apocalypse Now.