Planning began for a second offensive, codenamed Operation Dreadnought, to be launched out of the Orne bridgehead by the British VIII Corps (Lieutenant-General Richard O'Connor), outflanking Caen from the east. Dreadnought was cancelled following objections from O'Connor after studying the ground and an attack towards Évrecy was considered and rejected, either by Montgomery or Dempsey. In a postwar interview with Chester Wilmot, Dempsey claimed that he told Montgomery that he was going to cancel the proposed operation on 18 June. The weather from 19–22 June grounded Allied aircraft and the Germans took advantage of the respite from air attacks to improve their defences. Infantry positions were protected with minefields and 88 mm guns were dug into hedgerows and woods covering the approaches to Caen.