Dunnicliffe Crew, March 1944. Hind archive.

Pathfinder and Main Force Lancasters had identifying squadron codes and individual letters which made them easy to recognise in the air. For example, OF-D stood for 97 Squadron aircraft D-Dog (D-Donald at a later date). For a list of PFF squadron codes, see Pathfinder Squadrons by Type. For the individual letters (and one of our all-time favourite ground crew and Lancaster photographs), see our new page: Aircraft Codes & Letters