In response, Krueger sent the 163rd Regimental Combat Team from Wakde.[61] MacArthur soon grew impatient, as he needed the airstrips on Biak to support Admiral Chester Nimitz's Invasion of Saipan. Nimitz's operation ultimately drew Japanese attention away from Biak.[62] MacArthur put pressure on Krueger for results, and Krueger in turn put pressure on Fuller. Krueger decided that Fuller had too many responsibilities as both task force commander and division commander, and decided to supersede him by sending Eichelberger to take over the task force.