10th Anti-Aircraft Division (United Kingdom)


The 10th Anti-Aircraft Division was an air defence formation of the British Army during the early years of the World War II. It defended Yorkshire and Humberside during The Blitz and the Baedeker Blitz but only had a short career.

Mobilisation

The 10th Anti-Aircraft Division was one of five new divisions created on 1 November 1940 by Anti-Aircraft Command to control the expanding anti-aircraft defences of the United Kingdom. The division was formed by taking the two southern brigade areas from the existing 7th AA Division in North East England, together with a newly formed brigade, and giving it responsibility for the air defence of East and West Yorkshire and the Humber Estuary.
The divisional headquarters was at York and the first General Officer Commanding, appointed on 14 November 1940, was Major-General Langley Browning, who had been Commander, Royal Artillery, at 4th Infantry Division. The 10th AA Division formed part of II AA Corps.

The Blitz

The division's fighting units, organised into three AA Brigades, consisted of Heavy Anti-Aircraft and Light Anti-Aircraft gun regiments and Searchlight regiments of the Royal Artillery. The HAA guns were concentrated in the Gun Defence Areas at Hull, Leeds and Sheffield. The LAA units were distributed to defend Vulnerable Points such as factories and airfields, while the S/L detachments were disposed in clusters of three, spaced apart.
At the time the 10th AA Division was created, the industrial towns of the UK were under regular attack by night, to which the limited AA defences replied as best they could. West Yorkshire, despite its important industrial facilities, steelworks, aircraft and ordnance factories, was at a considerable distance from the Luftwaffe 's bases and was less often raided than coastal targets and The Midlands. Nevertheless, in the 10th AA Division's area, Sheffield was badly bombed on 12 and 15 December 1940, Leeds on 14 March 1941, Hull on 18 March and on 7 and 8 May, when Sheffield was also hit again.
, helping to clear bomb damage in Hull.
There were still too few AA guns for the tasks set them, and in March 1941 AA Command was obliged to shift some HAA guns from Sheffield to Liverpool, which was under much heavier attack. The position on LAA gun sites was worse: only small numbers of Bofors 40 mm guns were available at the start of the Blitz, and most LAA detachments had to make do with Light machine guns.

Order of Battle 1940–41

The division's composition during the Blitz was as follows:
Even when the main Blitz ended in May 1941, Hull was an easy target for inexperienced Luftwaffe crews and was frequently bombed and Parachute mines dropped in the Humber Estuary. A special S/L 'Dazzle Barrage' installed at Hull foiled at least one attack, in August 1941. The other gaps in AA defences were filled as more equipment and units became available. Searchlights, now assisted by Searchlight Control radar, were reorganised, with a 'Killer Belt' surrounding the Hull GDA to cooperate closely with RAF Night fighters. The HAA and support units increasingly became 'Mixed', indicating that women of the Auxiliary Territorial Service were fully integrated into them.
In the Spring of 1942 a new phase in the air campaign began with the so-called Baedeker Blitz mainly directed against undefended British cities. In the 10th AA Division's area, York was accurately hit on 28 April, Hull on 19 May and 31 July, and Grimsby on 29 May. The severity of the raid on Hull on 19 May was lessened when many bombs were aimed at a fire started by incendiary bombs landing on an AA site outside the city. Redeployment of resources became necessary to counter the Baedeker raids, mostly to southern England, but also the establishment of a GDA at York. A series of Luftwaffe 'hit and run' raids against towns on the South Coast also led to the withdrawal of many LAA guns. At the same time, experienced units were posted away to train for service overseas. This led to a continual turnover of units, which accelerated with the preparations for the invasion of North Africa in late1942.
The 65th AA Brigade HQ joined in June 1942 and several regiments were transferred to it from the 39th AA Brigade. The 62nd AA Brigade HQ left in August 1942 and took part in Operation Torch, landing in North Africa in December.

Order of Battle 1941–42

During this period the division was composed as follows :
The increased sophistication of communications for Gun Operations Rooms and RAF Sectors was reflected in the growth in support units, which attained the following organisation by May 1942:
The RAOC companies became part of the new Royal Electrical and Mechanical Engineers during 1942.

Disbandment

A reorganisation of AA Command in October 1942 saw the AA divisions disbanded and replaced by a smaller number of AA Groups more closely aligned with the groups of RAF Fighter Command. The 10th AA Division, which had been at Sand Hutton, outside York, but was by now at Leeds, merged with 2nd AA Division to form 5th AA Group based at Nottingham and cooperating with No. 12 Group RAF.

General Officers Commanding

The following officers commanded 10th AA Division: