The excellent combat flight simulation Cliffs of Dover with Team Fusion's modifications has provided one of the best flight simulations I have personally ever had the good fortune to experience.  The Air Tactical Assault Group's time and effort has created a one stop shop in building an online support platform from which to experience the very best in online combat flight simulations.  I encourage our members to visit the site and if possible support their efforts in continuing to grow and modify this simulation to it's full potential.

Historically, the Luftwaffe met a very well trained and determined enemy and had a lot of respect for the British willingness to mix it up in the skies over the Channel.  The high kill rates which were racked up on the Eastern Front were not prevalent in this Theater and the Luftwaffe could not live up to the claims of the over confident, Herman Goering....

In early July 1940, Fighter Command was regionally and operationally divided into three groups:

     11 group in the south, with headquarters in Uxbridge, west of London.

     12 group in central UK, with headquarters in Watnall in Nottingham.

     13 group in the north, with headquarters in Newcastle.

A fourth unit, 10 group was about to be formed with headquarters in Box, northeast of Bristol to take over operations in the airspace in the Southwest. This was declared operational on July 8, with initially four squadrons assigned from 11 group, numbers 87 and 213 squadrons at Exeter, 92 squadron at Pembrey and 234 squadron at St. Eval.

Each of these group headquarters also had an operations room with a similar plotting table showing the group's operational area. Next, the information was forwarded to the Group's various Sectors, who organized the various squadrons in each group. Each Sector Base also had such an operations room with a plotting table showing the sector's operational area.

Operational command rested with each Group Headquarters. There, orders went out by telephone to the Sector Bases, where the Sector Controller decided which units were to be alerted. The fighter units in the front line in southern England were divided into nine Sectors, each located at a base that served both as an airfield and operations command center: Middle Wallop and Filton in 10 Group; Tangmere, Kenley, Biggin Hill, Hornchurch, Northolt, North Weald and Debden in 11 Group. Each Sector  usually divided into between two and four squadrons at the sector bases and so-called satellite airfields.

While the airborne fighter pilots received instructions via radio from the Sector Control airfield and the commander of each Group had the overall responsibility for the operational command, Fighter Command Headquarters at Bentley Priory had an overview of the entire airspace and was responsible for air raid warnings, and for alerting the anti-aircraft units and the barrage balloons units.

Owing to this ingenious organization, Fighter Command was able to operate with a much higher efficiency than the Luftwaffe, which by this time had nothing even remotely reminiscent of the British air defense system. Eventually, the British air defense system was introduced in all major air forces, although in the German case, it was hardly a question of copying the British system, but rather simply the Germans having the same idea.

(excerpts from Battle of Britain: An Epic Conflict Revisited, by Christer Bergstrom)

Here is a short piece of film showing an actual practice 'Scramble' from 1938 or 1939. At this time No. 19 Sqn was the only unit flying this aircraft type. Later No. 66 Sqn, also at Duxford, were so equipped. 

No. 19 Sqn had the identifying letters WZ before the War, when they were changed to QV.

And the 'Scramble' continues ...