Operation Compass (also Italian: Battaglia della Marmarica) was the first large British military operation of the Western Desert Campaign (1940–1943) during the Second World War. British metropolitan, Imperial and Commonwealth forces attacked the Italian and Libyan forces of the 10th Army (Marshal Rodolfo Graziani) in western Egypt and Cyrenaica, the eastern province of Libya, from December 1940 to February 1941.
The Western Desert Force (WDF) (Lieutenant-General Richard O'Connor) with about 36,000 men, advanced from Mersa Matruh in Egypt on a five-day raid against the Italian positions of the 10th Army, which had about 150,000 troops in fortified posts around Sidi Barrani in Egypt and in Cyrenaica to the west. The WDF swiftly defeated the Italians in their fortified posts and at Sidi Barrani, forced the rest of the 10th Army out of Egypt and captured the ports along the Cyrenaican coast in Libya. The 10th Army was cut off as it retreated towards Tripolitania at the Battle of Beda Fomm, the remnants being pursued to El Agheila on the Gulf of Sirte.
The British took over 138,000 Italian and Libyan prisoners, hundreds of tanks, more than a thousand guns and many aircraft. The WDF suffered casualties of 1,900 men killed and wounded, about 10 per cent of the infantry. The WDF was unable to continue beyond El Agheila, due to worn-out vehicles and the diversion in March 1941 of the best-equipped units to conduct Operation Lustre for the Battle of Greece. The Italians rushed reinforcements to Libya to defend Tripoli, assisted by the Deutsches Afrikakorps and the Luftwaffe.
Background
10th Army
When war was declared, the 5th Army (General Italo Gariboldi) was in Tripolitania the western Libyan province and the 10th Army (General Mario Berti) was in Cyrenaica to the east. Once the French in Tunisia no longer posed a threat to Tripolitania, units of the 5th Army were used to reinforce the 10th Army. When the Governor-General of Libya, Italo Balbo, was killed by friendly fire, Marshal Rodolfo Graziani took his place. Graziani expressed doubts about the ability of the large non-mechanised Italian force to defeat the British, who, though fewer in numbers, were motorised. After being reinforced from the 5th Army, the 10th Army controlled the equivalent of four corps with 150,000 infantry, 1,600 guns, 600 tankettes and tanks and 331 aircraft. The XX Corps comprised the 60th Infantry Division "Sabratha" and the XXI Corps was composed of the 1st CC.NN. Division "23 Marzo", the 2nd CC.NN. Division "28 Ottobre" and the 63rd Infantry Division "Cirene". XXII Corps had the 61st Infantry Division "Sirte" and XXIII Corps had the 4th CC.NN. Division "3 Gennaio" and the 64th Infantry Division "Catanzaro".
The new Libyan Divisions Group (Gruppo Divisioni Libiche) had the part-motorised and lightly armoured Maletti Group (General Pietro Maletti), the 1st Libyan Division (Major-General Luigi Sibille) and the 2nd Libyan Division (Major-General Armando Pescatori). The Maletti Group had been formed at Derna on 8 July 1940 comprising seven Libyan motorised infantry battalions, a company of Fiat M11/39 tanks, a company of L3/33 tankettes, motorised artillery and supply units, as the main motorised unit of the 10th Army. On 29 August, as more tanks arrived from Italy, the (Libyan Tank Command [Colonel Valentini]) was formed with three groups: 1st Tank Group (Colonel Aresca) with the I Tank Battalion "M" and the XXI, LXI, and LXII Tank battalion "L", 2nd Tank Group (Colonel Antonio Trivioli), with the II Tank Battalion "M", less one company and the IX, XX, and LXI Tank Battalion "L"s and Maletti Group with one company from the LX Tank Battalion "L", one company from the II Tank Battalion "M", and three Libyan infantry battalions. Raggruppamento Maletti became part of the Regio Corpo Truppe Coloniali della Libia (Royal Corps of Libyan Colonial Troops), with the 1st Libyan Division and the 2nd Libyan Division.
Western Desert Force
Middle East Command (General Archibald Wavell) had about 36,000 soldiers, some outside Egypt, 120 guns and 275 tanks. The RAF had 162 aircraft composed of two squadrons of Hurricanes, one of Gloster Gladiators, three of Bristol Blenheims, three of Vickers Wellingtons and one of Bristol Bombays, about 46 fighters and 116 bombers. The Western Desert Force (WDF) was commanded by Lieutenant-General Richard O'Connor with the 4th Indian Infantry Division (Major-General Noel Beresford-Peirse) and the 7th Armoured Division (Major-General Sir Michael O'Moore Creagh). From 14 December, troops of the 6th Australian Infantry Division (Major-General Iven Giffard Mackay), replaced the 4th Indian Division, which was sent to East Africa, less one brigade. The British had some fast Cruiser Mk I, Cruiser Mk II and Cruiser Mk III tanks with Ordnance QF 2-pounder guns, which were superior to Fiat M11/39 tanks. The British also had a battalion of Matilda II infantry tanks that while slow, were also equipped with the 2-pounder; the armour of the Matildas could not be penetrated by Italian anti-tank guns or field guns.
Border skirmishes
Italy declared war on Britain and France on 10 June 1940. During the next few months there were raids and skirmishes between Italian forces in Libya and British and Commonwealth forces in Egypt. On 12 June 1940, the Mediterranean Fleet bombarded Tobruk. The force included the cruisers HMS Liverpool and HMS Gloucester and exchanged fire with the Italian cruiser San Giorgio. Royal Air Force Blenheim bombers from 45, 55 and 211 squadrons, hit San Giorgio with one bomb. On 19 June, the British submarine HMS Parthian fired two torpedoes at San Giorgio but missed. The gunners on San Giorgio then supported the local land-based anti-aircraft units and claimed 47 British aircraft shot down or damaged. The naval gunners also shot down a Savoia-Marchetti SM.79 aircraft and killed Italo Balbo, the Governor-General of Libya and Commander-in-chief of Italian forces in North Africa.
Prelude
Operazione E
On 13 September 1940, the Italian 10th Army advanced into Egypt in Operazione E. As the Italians advanced, the small British force at Sollum withdrew to the main defensive position east of Mersa Matruh. The Italian advance was harassed by the 3rd Coldstream Guards, attached artillery and other units. After recapturing Fort Capuzzo, the Italians advanced approximately 59 mi (95 km) in three days and on 16 September, the advance stopped at Maktila, 9.9 mi (16 km) beyond Sidi Barrani. The Italians dug in and awaited reinforcements and supplies along the Via della Vittoria, an extension of the Litoranea Balbo (Via Balbia) being built from the frontier. Five fortified camps were built around Sidi Barrani from Maktila, 15 mi (24 km) east along the coast, south to Tummar East, Tummar West and Nibeiwa; another camp was built at Sofafi on the escarpment to the south-west.
British plan
Following the Italian advance, Wavell ordered the commander of British Troops Egypt, Lieutenant-General Sir Henry Maitland Wilson, to plan a limited operation to push the Italians back. Operation Compass, for administrative reasons, was originally planned as a five-day raid but consideration was given to continuing the operation to exploit success. On 28 November, Wavell wrote to Wilson that,
I do not entertain extravagant hopes of this operation but I do wish to make certain that if a big opportunity occurs we are prepared morally, mentally and administratively to use it to the fullest.
The 7th Support Group was to observe the Italian camps on the escarpment around Sofafi, to prevent the garrisons from interfering, while the rest of the division and 4th Indian Division passed through the Sofafi–Nibeiwa gap. An Indian brigade and Infantry tanks of 7th Royal Tank Regiment (7th RTR) would attack Nibeiwa from the west, as the 7th Armoured Division protected their northern flank. Once Nibeiwa was captured, a second Indian brigade and the 7th RTR would attack the Tummars. Selby Force (3rd Battalion Coldstream Guards plus some artillery) from the Matruh garrison was to contain the enemy camp at Maktila on the coast and the Royal Navy would bombard Maktila and Sidi Barrani. Preparations were kept secret and only a few officers knew during the training exercise held from 25 to 26 November, that the objectives marked out near Matruh were replicas of Nibeiwa and Tummar; the troops were also told that a second exercise was to follow and did not know that the operation was real until 7 December, as they arrived at their jumping-off points.
Late on 8 December, an Italian reconnaissance aircrew reported that attack on Maktila and Nibeiwa was imminent but Maletti was not informed. On 9 December, the 1st Libyan Division was at Maktila and the 2nd Libyan Division was at Tummar. The Maletti Group was at Nibiewa and the 4th CC.NN. Division "3 Gennaio" and the headquarters of the Libyan Corps were at Sidi Barrani. The 63rd Infantry Division "Cirene" and the headquarters of XXI Corps were at Sofafi and the 64th Infantry Division "Catanzaro" was at Buq Buq. The HQ of XXIII Corps and the 2nd CC.NN. Division "28 Ottobre", were in Sollum and Halfaya Pass respectively and the 62nd Infantry Division "Marmarica" was at Sidi Omar, south of Sollum. Berti was on sick leave and Gariboldi, the 1st CC.NN. Division "23 Marzo" and the 10th Army Headquarters were far back at Bardia. (By the time Berti arrived in Libya, so had the British.) Operation Compass (la battaglia della Marmarica / Battle of the Marmarica) began on the night of 7/8 December. The WDF, with the 7th Armoured Division, 4th Indian Division and the 16th Infantry Brigade advanced 70 mi (113 km) to their start line. The RAF made attacks on Italian airfields and destroyed or damaged 29 aircraft on the ground. Selby Force (Brigadier A. R. Selby) with 1,800 men (the maximum for whom transport could be found), moved up from Matruh, set up a brigade of dummy tanks in the desert and reached a position south-east of Maktila by dawn on 9 December. Maktila had been bombarded by the monitor HMS Terror and the gunboat HMS Aphis; Sidi Barrani had been bombarded by the gunboat HMS Ladybird.
Battle of the Camps
Nibeiwa
At 5:00 a.m. on 9 December, a detachment of artillery commenced diversionary fire from the east on the fortified camp at Nibeiwa for an hour, which was held by the Maletti Group and at 7:15 a.m. the divisional artillery began a preliminary bombardment. The 11th Indian Infantry Brigade, with 7th RTR under command, attacked Nibeiwa from the north-west, which reconnaissance had established as the weakest sector. By 8:30 a.m., Nibeiwa had been captured; Maletti had been killed in the fighting along with 818 men, 1,338 were wounded; 2,000 Italian and Libyan soldiers were taken prisoner. Large quantities of supplies were captured for British casualties of 56 men.
The Tummars
The attack on Tummar West began at 1:50 p.m., after the 7th RTR had refuelled and artillery had bombarded the defences for an hour. Another approach from the north-west was made and tanks broke through the perimeter, followed twenty minutes later by the infantry. The defenders held out for longer than the Nibeiwa garrison but by 4:00 p.m. Tummar West was overrun except for the north-eastern corner. The tanks moved on to Tummar East, the greater part of which was captured by nightfall. The 4th Armoured Brigade had advanced to Azziziya, where the garrison of 400 men surrendered and light patrols of the 7th Hussars pushed forward to cut the road from Sidi Barrani to Buq Buq, while armoured cars of the 11th Hussars ranged further west. The tanks of 7th Armoured Brigade were held in reserve ready to intercept an Italian counter-attack. The 2nd Libyan Division suffered 26 officers and 1,327 men killed, 32 officers and 804 men wounded, with the survivors being taken prisoner.
Maktila
Unaware of the situation at the Tummars, Selby sent units to cut the western exits from Maktila but the 1st Libyan Division filtered through and escaped. Selby Force followed up the retreat as the 1st Libyan Division moved the 15 mi (24 km) from Maktila to Sidi Barrani and drove part of the column into sand dunes north of the coast road. Cruiser tanks of the 6th Royal Tank Regiment (6th RTR) arrived in a sandstorm and overran the Italians in the dunes at about 5:15 p.m., then joined Selby Force to continue the pursuit. The Italian defenders were caught at Sidi Barrani, in a pocket 10 by 5 mi (16.1 by 8.0 km) backing on to the sea. When the British attacked again at dawn on 11 December, mass surrenders began everywhere, except at Point 90 where troops of the 2nd Libyan Division held out for a short time, after which 2,000 troops surrendered.