Oh dear - no-one has commented so far on a TV show with over 150 episodes!!! I hope that someone (newly retired?) comes to the rescue soon. Maybe someone who worked in its production can fill things out a bit!
Unfortunately I am too young to remember any details - I only have impressions left. One strong impression is how the show revolved around "Bootsie and Snudge"! (Was that just because there was a series of those two characters after they "left" the army?) One thing I am sure of is that Alfie Bass (series 1 to 4) and Bill Fraser (series 2 to 4) must have done well over 100 episodes each - not the 3 listed! I do hope someone from Granada sets the record straight sometime soon! Apparently the surviving episodes are now available on DVD. I wonder if the show, so much of its period, would make much sense to modern viewers.
Some trivia - its theme tune, accompanied by singing from its cast, reached no5 in the UK singles chart!