Excellent work as ever. Attempting to ship them to Korea for a token British presence is a sound reason.
There was back in the first Korean war, a Commonwealth Division made up of Australian, British and Canadian personnel, Perhaps a reformed version of this (or a Brigade version) was the unit they were going to join?
With regard to the Royal Hampshire Regiment, their company's were named ' A, B, Y and Z'. Z company being the support company. I am currently reading
'The Hampshire Tigers: 1945 to 1992', which is where I gleamed this from. It does not say why this done. But chalk it up to usual British regimental idiosyncratic behaviour.
One question though, why the low numbers of personnel in the battalions? The units in the European theatres are affected by battle casualties, nukes as much as disease and desertion. But surely with food from Canadian farms and not engaging in costly actions, means they should have a higher compliment compared to other units across the globe?