In the time following the original Blitz, a little over a year earlier, the RAF had dramatically improved its night fighter capability and introduced the AMES Type 7 radar specifically for the night fighting role. Losses to the Luftwaffe's bomber force were unsustainable, and for a variety of reasons the damage to the targeted cities was minimal compared to the German bombing campaign of 1940–41, or to the contemporaneous Allied campaign against Germany. Nevertheless, the raids resulted in over 1,600 civilian deaths and tens of thousands of damaged homes.