Davef68,
good question ref the command titles. I still have my 'K' course notes (8 Course) which are headed 'Royal Air Force Transport Command '. I also have, somewhere, a print of the pic commissioned for the intro of the Herc into RAF service and am convinced that says 'Royal Air Force Transport Command'. Must try to find it. But whether any of the a/c were so marked I cannot remember. There must be a pic somewhere.