What would have been the pros and cons of an all Mosquito (and/or other fast medium bomber) force during WWII ? I have often thought about this. The cost, in terms of money and, more importantly, crew deaths, of the heavy bomber assault on Germany was huge. In fact, as we all know, RAF bomber crews had a less than 50% chance of survival from just one tour. From November 1943 to March 1944 Berlin was repeatedly bombed, the loss rate of the heavy bombers (predominantly Lancaster's) was 5.1%, for the Mosquito it was 0.5%. Even allowing for a significant increase in the light / medium bomber loss rate it`d still be far below that for the slower heavies. OK a force of thousands of lighter bombers would not have been able to drop the same weight of bombs as the force of heavies actually fielded, but the cost (money and men) would have been far less. Further, one of the main successes of the bomber offensive was to keep thousands of guns and fighters back in Germany for home defence, and surely they would still have been required. A Mossie could take 4,000lbs if bombs versus a Lancaster`s (approx) 14,000lbs. A Mossie couldn`t take a Tallboy or Grand Slam but would the inability to deliver those weapons have made a material difference to the outcome of the war.