Channel

On 22 March 1941, Abdiel (Captain Hon. Edward Pleydell-Bouverie) had acceptance trials interrupted and was ordered to lay mines with the objective of preventing the German battleships Scharnhorst and Gneisenau breaking out from Brest. In operation 'GV', 'GX' and 'GY', Abdiel with the destroyers Intrepid, Impulsive and Icarus escorted by Kipling, Kelly and Jackal on 23 and 28 March laid mines in the vicinity of Little Sole Bank and 40 mi (64 km) WSW of Brest.

From 17 to 30 April 1941 Abdiel attempted to complete her trials programme but this was again abandoned when the ship was ordered to join the cruiser Dido and the destroyers Kelly, Kipling, Kelvin, Jackal and Jersey. This group was then transferred from Plymouth to Gibraltar, having loaded military stores destined for Malta. The ships subsequently joined the Mediterranean Fleet.

Mediterranean

On 24 to 28 April 1941 they formed part of "Operation Dunlop". Dido, Abdiel and destroyers Janus, Jervis and Nubian, having discharged naval stores at Malta, proceeded to Alexandria.^[1]

On 21 May 1941 Abdiel laid a field of 150 mines off Akra Dhoukaton (Cape Dukato, southern tip of Lefkada island, Ionian sea). On the field were later the same day lost the Italian destroyer Carlo Mirabello (1,840 tons), the gunboat Pellegrino Matteucci and the German transports Kybfels (7764 GRT) and Marburg (7564 GRT) which were transporting a large contingent of the 2nd Panzer Division from Patras in Greece across the Adriatic Sea to the port of Taranto in Italy.

On the night of 26–27 May, Abdiel, escorted by the destroyer Hero and the Australian destroyer Nizam, landed 800 Commandos at Suda Bay.

On 31 May 1941, Abdiel sailed from Alexandria for Sfakia, Crete with the light cruiser Phoebe and three destroyers. During the following night these ships removed 4,000 troops from Crete.

Between December 1942 and April 1943 Abdiel, in cooperation with the minelaying submarine Rorqual and Abdiel's sister ship Welshman, laid several minefields with about 2,000 mines in the Strait of Sicily.

On 9 January 1943, after Abdiel laid a minefield across the Axis evacuation route from Tunisia, the escort of an Italian convoy ran into it and the destroyer Corsaro (1,645 tons) was sunk, while the destroyer Maestrale (1,440 tons) was severely damaged. On 3 February 1943 another Italian convoy's escort fouled another of her minefields south of Marettimo island, off the western tip of Sicily, losing the destroyer Saetta (1,225 tons) and the torpedo boat Uragano (910 tons).

On 8 March 1943, Abdiel again laid a minefield on the Axis evacuation route, 30 nautical miles (56 km; 35 mi) north of Cap Bon, Tunisia. On 24 March a convoy entered the field, and the Italian destroyers Ascari (1,645 tons) and Lanzerotto Malocello (2,125 tons) were lost. On 3 April 1943 Abdiel laid a minefield between the Italian fields X-2 and X-3, whose location was known to the Allies through Ultra intercepts and captured documents. On 7 March a convoy ran afoul the field, losing one of their escorts, the Italian torpedo boat Ciclone (910 tons).