All jolly good stuff, and I agree that "Dark Blue World" is worth seeing. Looking at the photos above, the Spitfires look like they are in something approaching a finger four, or schwarme (OK I know that there are five of them: the fifth might be the unlucky weaver about to get it in the neck) but they are not obviously in a vic (might just be the angle of the shot). The 109s appear to be in sort of, er, lines abeam. I recall reading in various sources that, although some of the Brits realised that the finger four, as developed by the Germans in Spain, was the way ahead, many of the RAF squadrons were constrained by pre-war doctrine to operate in vics, line astern etc, at least initially.