brian,your right,i have many pictures of lance sergeants in the manchester pals who are still wearing two stripes,a lance sgt is a corporal[paid] who is waiting for the next vacant sgts post,but hes allowed to wear three stripes,its similar to your uncles case,if you can find out the MK sunderland he was flying that may solve it,he was killed in aug and the MK11 was introduced in aug,so there was very little time for his papers to clear,mack