brummie nick, I posted that photo of a 3.7in calbre Anti- Aircraft Gun on an ex-services site, that photo was taken pre WW2 at Stockfield Rd Brks now demolished and the site has the Gala Bingo Hall on it, the Gunners on Oaklands Rec were nearly all Londoners because we kids would go and talk to them and run errands for them, the Terrier Gunners are wearing best uniform, my uniform on a Gun was denim boiler suit, no gaiters, no webbing belt and did you know, no studs in my boots so you did`nt slip on the metal base of the Gun, they would be wearing steel helmets while firing, you may have noticed that i always give Gun an uppercase "G" that is because the Guns are the Royal Artillery`s Colours so you rally around them and protect in battle, if you called your rifle a Gun the N/C/O`S would give you a ripe lot of swear words!.