Jack, Sorry. I didn't look closely enough. I see they were WWII. So my comments about 1911 census are largely irrelevant. However, the other suggestions seem valid. I believe they were born outside Nottinghamshire. One would imagine that to serve in WWII most would have to be born 1900-1930. You can search FreeBMD for Hallett events in Nottinghamshire using B* and C* for given names. The solitary male B* is Bertie born 1925 mother's maiden name Turner. He'd only be 14 at the start of the war, but could have enlisted later. For C* there's a Claude 1909 and a Clifford 1915 who married Elizabeth Icke in 1939 and have a son Clifford in 1941. But his mother's maiden name was Waterson. Of course, I'm assuming they were brothers and were related. They could be cousins or just have the same surname. If they died, Commonwealth War Graves has only a couple of possibilities for each initial. It would be unusual for both to be killed, but you could click on each of the names and see if there were common parents or other possible clues. Otherwise, try redoing the search on FreeBMD looking in all counties and see if you can spot a common birthplace or mother's maiden name. Peter