Air Marshal Sir Hugh Dowding later admitted he had been "a little doubtful" at first about the Polish airmen. The British government informed General Sikorski that at the end of the war, Poland would be charged for all costs involved in maintaining Polish forces in Britain. Initial plans for the airmen greatly disappointed them: they would only be allowed to join the Royal Air Force Volunteer Reserve, wear British uniforms, fly British flags and be required to take two oaths, one to the Polish government and the other to George VI; each officer was required to have a British counterpart, and all Polish pilots were to begin with the rank of "pilot officer", the lowest rank for a commissioned officer in the RAF. Only after posting would anyone be promoted to a higher grade.