When the Shackleton squadrons were forming in the early 1950s the individual aircraft were allocated to individual crews and not to Engineering Wing as they were later. One rather vainglorious captain had this label painted below the cockpit window of “his” Shack.
Flt. Lt. XXXXXXX,
“A” Flight Commander.
No. 269 Squadron.
To which somebody added
White Card.
The ratings went White, Green and Master Green.