The 80th Anti-Aircraft Brigade (80th AA Bde) was an air defence formation of the British Army during the Second World War. It landed on D-Day and saw action throughout the campaign in North West Europe, providing early warning of attacks by V-1 flying bombs against Antwerp during the winter of 1944–45.

Origin 80th AA Brigade was formed on 10 April 1943 at Blandford Camp under the command of Brigadier H.W. Deacon. Within a month the Headquarters (HQ) and mobile AA Operations Room (AAOR) personnel and the Brigade Signal Section had joined, and the brigade had taken command of its first units: 86th (Honourable Artillery Company) and 103rd Heavy AA Regiments, 73rd and 114th Light AA Regiments.Frederick, p. 1052.80 AA Bde War Diary 1943, The National Archives (TNA), Kew, file WO 166/11248.

Brigadier Henry Wynn Deacon (1893–1977) was commissioned into the Royal Artillery in 1913 and had served during the First World War. Seconded to the Royal Air Force as an observer (1918–20), he had been awarded a Distinguished Flying Cross (DFC) for making reconnaissance flights under fire during the closing weeks of the Mesopotamian campaign.Routledge, p. 308.Half-Yearly Army Lists 1919–39.Deacon's RAF service record, TNA file AIR 76/129/88.London Gazette 5 April 1919.Deacon at Generals of WWII. Since the outbreak of the Second World War he had commanded 13th Anti-Tank Regiment in the Battle of France and then served in the West African defences. Latterly he had commanded the Fixed Defences in Home Forces.Farndale, p. 16 and Annex J.

Training 80th AA Brigade did not form part of Anti-Aircraft Command but came under the Hampshire and Dorset District of Home Forces, and was later assigned to Second Army forming for the planned invasion of Normandy (Operation Overlord). Immediately upon formation, the brigade began training with Nos 5 and 6 Beach Parties, which would control the support services during the assault landings on Sword Beach. Demonstrations of opposed beach landing by AA guns were carried out in May 1943, and the regiments attended practice camps in various part of the UK. On completion of training and field exercises, the regiments were sometimes deployed under AA Command formations to assist Air Defence of Great Britain (ADGB).

In Second Army's plan for Overlord, I Corps, supported by 80th AA Bde, was to land on two beaches, Sword and Juno, while XXX Corps, supported by 76th AA Bde, was to land on the other beach (Gold). In January 1944, 76th AA Bde was placed under the command of 80th AA Bde for operations and training, an arrangement that remained in place until after D-Day.80 AA Bde War Diary 1944, TNA file WO 171/1085.

Light AA (LAA) defence was to be emphasised at the start of the operation, since low-level attack by Luftwaffe aircraft was considered the most likely threat. In December 1943–January 1944, 114th LAA Rgt carried out user trials at No 16 AA Practice Camp at Clacton-on-Sea on self-propelled (SP) 40 mm Bofors guns mounted on Crusader tank chassis, a proportion of which later equipped that regiment and 73rd LAA Rgt. On 1 January, 93rd LAA Regiment joined from ADGB. This regiment was given a special assault role in the Overlord plan, for which it was equipped with the new 20 mm Polsten gun in triple mountings, half of them mounted on Crusader chassis.Joslen, p. 583.80 AA Bde Operation Order No 1, 20 May 1944, TNA file WO 171/1085.93 LAA Rgt War Diary 1944, TNA file WO 171/1124.Routledge, pp. 305–7.

Order of battle

The basic organisation of 80th AA Bde was fixed in 1943, and had reached its full extent by D-Day: 86th (HAC) HAA Rgt – 24 x 3.7-inch guns 273, 274, 383 Batteries 103rd HAA Rgt – 24 x 3.7-inch guns 322, 323, 324 Btys 73rd LAA Rgt – 54 x 40 mm Bofors guns (of which 6 SP tracked) 218, 220, 296 Btys 93rd LAA Rgt – 36 x 20 mm guns (of which 18 SP tracked) 321, 322 Btys 320 Bty (18 x 20 mm, of which 9 SP) detached to 76 AA Bde on Gold Beach 114th LAA Rgt – 30 x 40 mm Bofors guns (of which 12 SP) 372, 373 Btys 375 Bty and one Trp 372 Bty (24 x SP) detached to 76 AA Bde on Gold Beach

474th (Independent) Searchlight Battery – 24 x 90 cm S/L 155 and 160 AA Operations Rooms (AAOR) 16 Fire Control Post 76 and 103 Coast Observation Detachments 80th AA Bde Signals, Royal Corps of Signals 379 Artillery Company, Royal Army Service Corps – detached to Supply & Transport Column for assault phase 1573 LAA Regiment Platoon 1584 HAA Regiment Platoon 1587 LAA Regiment Platoon 1613 HAA Regiment Platoon 80th AA Brigade Workshop, Royal Electrical and Mechanical Engineers (REME) – each AA Regiment and the S/L Battery also had its own REME Workshop 112 Company Pioneer Corps – equipped with smoke generators 15 Sections, plus 5 Sections detached to 76 AA Bde on Gold Beach

Also under command for the Assault Phase: F Troop of the 318th Battery, 92nd (Loyals) Light Anti-Aircraft Regiment, Royal Artillery (Self-propelled Bofors) – detached from the 3rd British Division and tasked to join the 6th Airborne Division to help defend the Bénouville bridges following their capture. 139th Light Anti-Aircraft Regiment, Royal Artillery RHQ aboard MV Mosquito 177, 230 Btys divided into three groups, each manning 5 AA barges off each Second Army beach 63rd Bty, 20th LAA Regiment – 9 x 40 mm and up to 24 x 20 mm on 'Gooseberry' blockships 4 x Beach Balloon units

D-Day

Elements of 80th AA Bde landed with the leading waves on D-Day (6 June), divided into four assault groups each under the command of one of the regimental headquarters (RHQs):'M' & 'N' Assault Groups Operation Order No 1, 103 HAA Rgt War Diary, May 1944, TNA file WO 166/14783.Joslen, pp. 583–5.3 Inf Division at RA 39–45.50 (Northumbrian) Division at RA 39–45.3 Can Inf Division at RA 39–45.

Under 3rd British Division on Sword Beach: 'M' AA Assault Group with No 5 Beach Group, 101 Beach Sub-area RHQ 73rd LAA Rgt (Lt-Col J.A. Armstrong) 218/73 LAA Bty 296/73 LAA Bty less 2 Troops G & H Troops 322/93 LAA Bty 322/103 HAA Bty C Troop 323/103 HAA Bty B Troop 474 S/L Bty 16 Fire Control Post 76 & 103 Coast Observation Detachments One Platoon 112 Company, Pioneer Corps (smoke generators) 73 LAA Rgt Workshop, REME 'N' AA Assault Group with No 6 Beach Group, 101 Beach Sub-area RHQ 103rd HAA Rgt (Lt-Col H.E. Johnston) D Troop 323/103 HAA Bty 324/103 HAA Bty 220/73 LAA Bty I Troop 322/73 LAA Bty C Troop 474 S/L Bty 160 AA Operations Room One Platoon 112 Pioneer Company 103 HAA Rgt Workshop, REME

Under 3rd Canadian Division on Juno Beach: 'O' AA Assault Group with No 7 Beach Group, 102 Beach Sub-area RHQ 114th LAA Rgt (Lt-Col N.W. Hoare) 372/114 LAA Bty less C Troop 321/93 LAA Bty less E Troop 274/86 HAA Bty 1 Troop 383/86 HAA Bty 474 S/L Bty, less B and C Troops 112 Pioneer Company less detachments 114 LAA Rgt Workshop, REME 'P' AA Assault Group with No 8 Beach Group, 102 Beach Sub-area RHQ 86th (HAC) HAA Rgt (Lt-Col G.H. Champness) 273/86 HAA Bty 383/86 HAA Bty less 1 Troop 375/114 LAA Bty 1 Troop 296/73 LAA Bty 1 Troop 321/93 LAA Bty Detachment 112 Pioneer Company 86th HAA Rgt Workshop, REME

The regiments landed with minimum scales of equipment, to be brought up to strength by parties arriving later, while some elements of the brigade landed with 76th AA Bde on Gold Beach. 80th AA Bde planned to bring the following equipment ashore in I Corps' area before nightfall (although this proved to be too ambitious): 32 x 3.7-inch HAA guns 84 x 40mm Bofors LAA guns 16 x 20 mm Polsten LAA guns 12 x S/Ls

Brigade HQ moved to the marshalling areas on 23 May and embarked on 2–3 June, the Tactical HQ aboard LCTs 1133 and 1134 at Gosport, the main HQ aboard LSTs 3001 and 3002 at Tilbury. Tactical HQ sailed on 5 June and was due to land at 11.00 on 6 June (D-Day) but was delayed because of congestion on the beaches. Eventually it landed at 15.30 near Courseulles-sur-Mer, by which time the AA Report Centre on the beach was functioning satisfactorily. Tactical HQ was established at Beny-sur-Mer.

The brigade's units experienced considerable problems during the landings, with losses of landing craft and hard fire-fights still going on to establish a firm hold, especially at Juno. 73rd LAA Rgt managed to land some of its 40 mm Bofors guns on the first tide, but heavy fire prevented 218th Bty from reaching its positions until five hours later, while 220th Bty found its intended positions to be still in enemy hands. 80th AA Bde's communication difficulties meant that 73rd LAA Rgt remained out of contact until the following day (D+1). None of the HAA guns were successfully landed until the following afternoon, and these were damaged in landing. Luckily, Luftwaffe air attacks on D-Day were few and sporadic. Additional Troops of 73rd and 114th LAA Rgts landed on D+1 as air attacks began to increase, peaking on D+3.Routledge, pp. 308–10.

B Troop of 322/103 HAA Bty had a secondary coastal artillery role to protect shipping off Queen sector from attack by German E-boats, particularly at night. For this purpose 16 Fire Control Post and 76 and 103 Coast Observer detachments were landed with it, under command of 103rd HAA Rgt. The guns would fire blind, controlled by radar, or with the assistance of searchlights.

Once the initial landings had been achieved, the AA Assault Groups were broken up and reorganised by regimental groups, the regimental commander being AA Defence Commander for the local area. The troop of 92nd LAA set off to join the glider troops at Bénouville (Pegasus Bridge) and the brigade settled down to its initial task of defending the unloading shipping and landing craft, and the beach exits.

Normandy

As the build-up in the Normandy beachhead grew during June and July 1944, 80 AA Bde was tasked with protecting Juno and Sword beaches, the small port of Ouistreham, and the Orne and Caen Canal bridges at Bénouville, the whole being designated an Inner Artillery Zone (IAZ) at night.Routledge, Table XLIX, p. 319. For June, 80th AA Bde reported ratios of one aircraft shot down for every 253 HAA or 1097 LAA rounds fired.Routledge, pp. 312–5.

Although Luftwaffe air attacks over the beachhead were generally sporadic, they concentrated on the bridges, while Sword Beach and the whole Eastern Sector remained under mortar and artillery fire. At the end of July, 114th LAA Rgt reported that it was being attacked by a 'secret weapon'. Upon investigation it appeared that it was being shelled by a large calibre gun from long range.

When the first elements of 100th AA Bde arrived (starting with 113th (Durham Light Infantry) LAA Rgt and 60th (City of London) HAA Rgt), they were temporarily placed under the orders of 80th AA Bde. Some of 63/20th LAA Bty's crews were washed off their Gooseberries during the storm of 19/20 June, and they were sent to reinforce 73rd and 114th LAA Rgts.

Given the low intensity of Luftwaffe air attacks, HAA guns in the bridgehead were sometimes made available to fire on ground targets for bombardment, counter-battery and anti-tank shoots. For example, 80th AA Bde's 3.7-inch guns fired in support of I Corps during Operation Charnwood on 8 July. The brigade's HAA guns stationed at the mouth of the Orne were also tasked with a role in coast defence, to fire an airburst high explosive barrage against enemy craft if requested by the Royal Navy. Some searchlights from 474th S/L Battery were also given a subsidiary coast defence role, while radar sets were used to plot Parachute mines being dropped by German aircraft in the anchorage (though the AA guns were forbidden to engage them for fear of causing casualties among the shipping). A roving Troop of 114th LAA Rgt was sent to protect an important ammunition ship unloading at Ouistreham.101 Sub-Area Notes, 18 March 1944, TNA file WO 171/1085.