I was called up in the war and sent to a hospital. I dressed wounds, applied iodine, gave enemas, did blood transfusions. If the doctor ordered: "Brecht, amputate a leg!", I would reply, "Certainly, Your Excellency!", and cut off the leg. If I was told, "Perform a trepanning!" I opened the man's skull and messed about with his brains. I saw how they patched fellows up, so as to cart them back to the Front as quickly as they could.