The 9th Brigade was forced to withdraw to its D-Day positions, having suffered more casualties than any unit on Juno the previous day. The 7th Brigade reached its final D-Day objectives along Line Oak, while the 8th Brigade attempted to destroy German radar stations to their east, which took until 11 June. The 3rd Canadian Infantry Division made contact with the British from Sword on 7 June, before forming a continuous front with the American sector by 13 June. The subsequent advance on Caen and Cherbourg was slow, as a greater number of German Panzer units were concentrated near Caen and Carentan. The Canadians captured Carpiquet Airfield during Operation Windsor on 5 July, while Anglo-Canadian forces captured Caen as part of Operation Charnwood (8–9 July) and Operation Atlantic (18–20 July). Military historians have generally drawn the conclusion that the preliminary aerial and naval bombardment of Juno was not as effective as had been hoped, yet differ in their opinions as to how ineffective. The aerial bombardment of Juno's defences the night before is considered to have been very ineffective, primarily because of the inclement weather. John Keegan notes that "the prevailing low, thick cloud frustrated its [Bomber Command's] efforts". Colonel Stacey—the official historian of the Canadian Army in the Second World War—considers the effects of the bombing runs to have been "spotty", noting that while several coastal batteries were not hit, those that were (such as the battery at Houlgate) were hit accurately. Chester Wilmot offers a different view, suggesting that "[the coastal guns] had been accurately bombed, but had survived because they were heavily protected by the concrete casemates Rommel had insisted upon". Historians' assessment of the naval bombardment is even more mixed; while they generally agree that it failed to fully neutralize German defences on Juno, they are in disagreement as to why. Stacey suggests that while the "beach-drenching fire" was concentrated and substantial, it was both inaccurate and of insufficient firepower to destroy the coastal bunkers. He further suggests that the effect of the drenching fire was moral rather than material, in that it forced defenders to keep below-ground and sapped their morale. Terry Copp echoes this analysis, noting that "reasonable accuracy could not be obtained from the pitching decks of LCTs [by mounted artillery on the ships]"; the 13th Field Regiment's drenching fire fell on average past their targets. British historian Max Hastings notes that because of the delay in landing times by ten minutes, a substantial gap existed between the cessation of bombardment and the actual landing of the first waves of infantry, meaning that platoons of the 716th had ample time to return to their positions.