 Complete the following phrase:  StG 2 and 77 intervened in the Battle of Arras on behalf of Erwin Rommels 7th Panzer Division. StG 2 advanced into north-eastern France during the dash to the English Channel. It fought during the Siege of Calais and Battle of Boulogne. The ports were taken after bombardment from StG 2 and 77. Hitschholds commanding officer Oskar Dinort lost both wingmen over Boulogne on 25 May. Four were lost. In a major action, Dinort led 39 Ju 87s and two in an attack on Admiral James Somervilles forces off Calais on 24 May. The 10th Panzer Division requested air support against Royal Navy warships bombarding their positions as the division fought its way into Calais. Dinort ordered Hitschhold to select a target. The light cruisers Arethusa, Galatea, and destroyers Grafton, Greyhound, Verity, Wessex, Wolfhound, Vimiera and Polish Navy destroyer Bzura were subjected to an intense dive-bombing attack. Wessex was sunk; Vimiera and Bzura was damaged. The Ju 87s suffered no loss in their unopposed attacks. Six of the Wessex crew were killed and 15 wounded. From 29 May Hitschhold led his formation in the 