Operation Harpoon (1942) - Background

Background

Until the French surrender and Italy's declaration of war, the Mediterranean had been an Allied "lake". The French Fleet and the Royal Navy's Mediterranean Fleet dominated the only potential and credible adversary, Italy's Regia Marina.

The French surrender and its consequences changed that. The French Fleet became a potential threat in Axis hands and so was, in part, destroyed, adding to French antipathy toward the British. French bases in North Africa ceased to offer protection to Allied shipping. The Regia Marina possessed potent modern warships, particularly battleships and heavy cruisers, and Italian and Libyan territory provided centrally located naval and air bases that could cut British supply routes. The fall of Greece and Crete in 1941 extended the reach of Axis forces which were consequently able to intercept Allied shipping from Alexandria and Suez by air.

Italian and German armies in Libyan territory also threatened Egypt and the control of the strategically important Suez Canal. A catastrophe in Egypt might in turn lead to destabilisation of Britain's control of Middle Eastern oil supplies, or even worse, to the Axis gaining control of them. This apocalyptic scenario depended upon Axis forces in North Africa receiving adequate supplies from Italy.

Malta threatened this Axis supply route, but itself needed regular resupply and reinforcement, in order to be effective and to resist Axis invasion.

By mid-June, 1942, Malta's supply situation had deteriorated. The Luftwaffe had joined the Regia Aeronautica to isolate and starve the island and it had become untenable as an offensive base. Axis armies had advanced into Egypt and Crete thereby acquiring their own advance bases and denying the British safety over much of the eastern Mediterranean.

Fresh aircraft were regularly flown in to Malta, but food and fuel were diminishing. In response, Britain invested large amounts of effort to ensure resupply. Two convoys, codenamed Harpoon and Vigorous, were gathered, sailing simultaneously to split Axis forces. To contest the two Malta convoys, the Axis airforces had a total of 347 Italian and 128 German aircraft in the western Mediterranean, of which 175 Italian aircraft were based in Sardinia, with the rest in Sicily while 53 Italian and 122 German aircraft were based in the eastern Mediterranean; a total of 650 aircraft, although not all were operational.

A series of British naval disasters allowed the Regia Marina to gain naval supremacy in the east-central Mediterranean. The Italian Fleet took advantage of the situation and moved onto the offensive, blocking or decimating at least three large British convoys bound for Malta. This led to a number of naval engagements, such as the Second Battle of Sirte, the Battle of Mid-June or Operation Harpoon (plus Operation Vigorous) and finally to Operation Pedestal, all of them favourable to the Axis. However, the only real success of the Italian Fleet was the attack on the Harpoon convoy.

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