I was on number 196 Army Pilots course in 1967. The CFI at that time was an RAF Wing Commander. After training we newbies could find ourselves on one of 5 types then in Hairy Arm Corps inventory. Tribalism was not as rife between the services in those days. On 'interesting' tours such Northern Ireland pilots from all three services could find themselves operating from the same location and they invariably got along well. Fish heads and brown jobs particularly so. Crab Air was generally perceived as being hampered by their hide-bound regulations.