The True Start Date of the Battle of Britain? ...and Convoy Peewit

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The 8 August 1940 saw the first large scale sustained clashes between the RAF and the Luftwaffe and as such was initially considered to be the official start date of the Battle of Britain by the Air Ministry.

In 1941 Dowding rejected the 8 August to be the start date and proposed it to be the 10 July 1940, which, in Britain, is the date accepted by most nowadays. In Germany, the start of the Battle of Britain was when they launched their Eagle Attack, their plan for the destruction of RAF Fighter Command.

The action in the period from 10 July to 7 August was in many ways indistinguishable from post-Dunkirk harassing raids. For this reason, some still consider the 8 August to be the true start date of the Battle of Britain.

On the days leading up to the 8 August 1940, Luftwaffe activity was fairly light. This was mainly due to the fact that there was little in the way of British shipping movements.

The 8 August 1940 saw are a large convoy (with the RAF codename of Peewit) of more than twenty merchant ships attempting to go through the Straits of Dover and heading westwards.

The 8 August 1940 saw the heaviest ever raids against a British convoy. 

Only 4 of original 20+ ships of Peewit convoy reached Swanage undamaged

This was the first time for two weeks that a merchant convoy attempted passage through the English Channel.

The convoy had assembled the previous night at Southend and passed through the Dover Straits during the hours of darkness, heading for Swanage in Dorset.

Sadly the convoy was picked up by the German Freya radar. German torpedo boats were sent to attack at the convoy at dawn and afterwards some 300 Ju87s and 150 Bf109s were also sent to attack the convoy.

41 Squadron (Spitfires), 64 Squadron from Kenley (Spitfires), 65 Squadron from Hornchurch (Spitfires) and 610 Squadron from Biggin Hill (Spitfires) were sent to the Channel to intercept.

The torpedo boats had sunk three ships and damaged another three before light.

The British fighters reached the enemy aircraft before they had engaged the convoy. During the air combat that followed, four Spitfires were shot down with three pilots killed, one bailed out. Two more Spitfires were damaged and forced to return to base and another crash-landed on the Kent coast.

A Bf109 was shot down and the pilot killed, four others tried to make it back to base but crash-landed in Northern France. Another was severely damaged but made it back to base.

Only one ship received damage from a single Ju87 that managed to get through.

With the benefit of low cloud, the protection of the Royal Navy and RAF fighters, Convoy Peewit continued its journey westwards.

Further down the coast the convoy ran into better weather and the convoy was attacked by 89 Ju87s and 70 Bf109s just off the Isle of Wight. The Ju87s caused severe damage to the convoy.

Fighter Command scrambled 145 Squadron from Westhampnett/Tangmere (Hurricanes), 257 Squadron from Northolt (Hurricanes) and 609 Squadron from Middle Wallop (Hurricanes) to meet the attackers.

By the time the RAF arrived the Ju87s were returning to their bases but intense combat ensued between the British fighters and the Bf109s.

The Spitfires and Hurricanes were forced to fight the Bf109s, leaving Ju87s to attack the convoy unhindered.

Damaged and burning ships bellowing black smoke were scattered over the Channel for miles.

The RAF had lost 13 Hurricanes in defending Peewit, five others were damaged and one Spitfire was destroyed. 13 pilots were killed and 3 seriously wounded.

Len Deighton in his book Fighter (1977) commented:

The British sailors who died this day were the victims of two aspects of stupidity. Firstly, the coastal convoys, carrying domestic cargoes, were still being sent through the dangerous waters of the Channel (instead of the goods going by railway, as they did later). Secondly, the Admiralty, in spite of endless evidence, refused to allow for the fact that the Germans might have excellent radar.

Whatever the shortcomings of the Admiralty, this was indeed a portent of the intense air fighting to come when massive formations of Luftwaffe and RAF aircraft would clash in the skies over the next few weeks.

To some, it was the intense aerial combat over Convoy Peewit which heralded the start of the Battle of Britain proper,  on 8 August 1940

by Steve Dunster

British Radar: It's not what you've got - it's what you do with it!

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British radar has widely been credited as being a major reason for the RAF being able prevent the Luftwaffe from gaining air superiority over the UK during the Battle of Britain.

British radar could determine the distance and height of aircraft approaching the coast from 200 miles away and could even detect low flying aircraft from a distance of 100 miles away.

This allowed RAF Controllers to have sufficient early warning to be able to scramble fighters and direct (vector) them to intercept raids without having to fly standing patrols, giving exhausted pilots much needed respite at the height of the battle.

It is thought that the effectiveness of British radar largely neutralised the advantage that Germany should of had from its superiority in numbers making the Battle much more closely matched. Without radar the RAF would probably have been overwhelmed by the Luftwaffe and the Battle of Britain may well have been lost. 

Why didn't the Luftwaffe knock out the British radar stations? 

It wasn't because radar was a military secret or because Germany couldn't work out what the strange masts were for. They knew exactly what they were and what they were capable of.

Germany actually had much better radar than Britain during the Battle of Britain. Their radar sets were smaller; easier to rotate, move and position; higher resolution and able to detect smaller targets.

Whilst their Freya radar sets were better, they were of a more complex design and they only had 8 operational by the start of the war, leaving large gaps between covered areas.

British radar was simpler and easier to make and by the start of the war there was a complete chain of radar stations looking out to sea all along the southern and eastern coasts (Chain Home or CH).

Germany was successfully detecting RAF bomber raids in great detail with their radar but they were having big problems communicating any useful information in time to their intercepting fighters. They therefore assumed that the RAF would have the same problem so didn't see British radar as a high priority target.

Curiously, whilst Germany was having problems getting radar data to fighters, they did seem to have some success in vectoring bombers onto shipping targets they'd detecting some 60 miles away.

At the start of the Battle of Britain, Germany did try to attack British radar using two different methods: dive-bombing and jamming.

Dive-bombing met with little success, primarily because the huge masts of open steel construction were quite resilient to bomb damage. A few of the radar stations were taken off line temporarily but only for few hours. It is perhaps worth considering what might have happened if Germany had realised their importance and been more persistent in their raids.

Jamming only met with temporary success. In July 1940 a simple method of jamming was used by Germany but was easily defeated. In September 1940 a more elaborate method of jamming was used but this too was quickly defeated.

The Dowding System

What was exceptional about the British radar, was not the radar itself but the command and control method developed before the war by Dowding and his commanders.

British radar could only look out to sea, once the raid was over land, the radar was no help and plotting raids over land had to be done with the help of the Observer Corps.

The UK was divided up into small areas, each with it's own designation and there would be an Observer Corps detachment responsible for each. Each detachment would be connected by telephone to the same filter rooms as the radar stations allowing a battle plan be updated,almost in real time so the commanders could decide how to respond.

The UK had solved the problem of getting useful radar data to the intercepting fighters!

It also had radar stations that were resilient to bombing, a design that was simple and quick to construct, a radar coverage that was complete with no holes, a backup system with the Observer Corps and a radar design that was capable of being quickly modified to counter jamming.

Britain didn't have the best radar - but it did know what to do with it!

by Steve Dunster