Feldwebel - This:
http://en.wikipedia.org/wiki/Militar...5%E2%80%931945) states that the RAF equivalent is Flight Sergeant and a Sergeant is an Unteroffizier. However this:
http://www.elsham.pwp.blueyonder.co.uk/ranks.html and other sources state that the equivalent of Feldwebel is Sergeant and a Flight Sergeant is an Oberfeldwebel.
Can anyone give a difinitive answer?