was up and running by 2 June. Much of the tactical discussion concerned how far the British infantry should realistically be expected to push. The immediate targets were the Black Line, just under forward, the Green Line further on and the Red Line further. Gough agreed with Maxse's proposal (31 May) for attacks just before sunset (giving troops more rest prior to the attack, and the Germans less time to counterattack) and advancing further than the Black Line to the River Steenbeck. Gough agreed that opportunities had gone to waste at Arras (9 April) as the initial attack had not been pressed hard enough. At the next corps commanders' conference (6 June) Gough declared that "should the enemy be thoroughly demoralised during the initial attack, it might be possible to gain portions of the Red Line (at that stage still a second day's objective) during the first 24 hours," although he was keen to distinguish between a bold attack against a crumbling enemy and "an organized attack against ... organized resistance". A document circulated on 7 June stressed that platoon, company and battalion commanders were to be urged to act with initiative to seize ground, in the hope of repeating the successes of 1 July 1916 (the First Day of the Somme, on the southern part of the British line), 13 November 1916 (the first day of the Ancre) or 9 April 1917 (the first day of Arras). Simpson comments that as adequate field artillery support on the first day would only extend as far as the Green Line in places, "a repulse was almost inevitable" for those units which pushed on further, and that Gough still did not appear to realise that an offensive might stall because of stronger German resistance and counter-attacks, rather than from lack of initiative among junior officers. Failure to exploit Messines After his victory at Messines, and in accordance with prior plans, Plumer ordered II and VIII Corps to exploit German disorganisation by attacking the Gheluveld Plateau. When their patrols encountered resistance (8 June), Haig asked Plumer to launch this attack at once, instead of waiting three days to redeploy sixty heavy and medium guns as arranged. When Plumer, after consultation with his corps commanders, declined to be rushed in this way, Haig placed II and VIII Corps under Gough's command, ordering him to prepare to seize the area around Stirling Castle. Gough, despite