One has to remember that DJtCap in Main Building had to sign off on the Merlin Force conducting a 're-set', so in the eyes of defence it was seen as a pre-requisite. The majority view within HQ JHC at the shop floor level was that this was a barking idea (across all 3 services) and that the Merlin force could attain the required hot, high and heavy training as part of extant exercises that may happen to have incorporated some ground manouevere elements.