On 10 May the Dornier units, "Kampfgeschwader 2", "KG 3" and "KG 4", were under the command of "Fliegerkorps. II". "Kampfgeschwader 76" and "77" also operated the Do 17 under "Fliegerkorps I" and "Fliegerkorps VIII". The Do 17 saw its usefulness diminish during the French campaign owing to its limited bomb load and range. The design continued to be favoured by the "Luftwaffe" aircrews, as it was more maneuverable than the He 111 or Ju 88, and because of its ability to perform low-level strikes well. An example of this was a raid carried out by KG 2 against the RAF-controlled airfield at Vraux on 10 May. Six Bristol Blenheims and two Fairey Battles of No. 114 Squadron RAF were destroyed, with many more damaged. However, Allied fighter resistance on the first day was severe, and KG 2 and KG 3 of "Fliegerkorps II" lost a total of nineteen Do 17s between them on 10 May. Only two weeks into the campaign, KG 2 and 3 suffered fuel shortages, keeping the Dorniers grounded and forcing some attacks to be aborted. By the beginning of June, the Dornier "Geschwader" were encountering less opposition and losses declined sharply, as the "Armée de l'Air" was no longer a sufficient threat. However, over Dunkirk, the RAF fighters inflicted a high loss rate. On 2 June, thirty German aircraft were destroyed, including sixteen Do 17s (four from KG 2 and twelve from KG 3). The Dornier units dropped some 320 tonnes (350 tons) of bombs.