talk to Kitchener, Robertson remained behind as he could not be seen to argue with French in public. He advised on 25 June 1915 against retreat to the Channel Ports, an option contemplated by the Cabinet after the defensive losses at Second Ypres, arguing that it would leave the British "helpless spectators" in France's defeat, and on 26 June, in response to a Churchill memorandum, that attacks on entrenched positions at Gallipoli had been just as costly as on the Western Front, but without the chance of defeating the German army. In "Notes on the Machinery of the Government for the Conduct of the War" on 30 June 1915 he argued, in Clausewitzian terms, that the government should state its war aims, in this case, the liberation of Belgium and the destruction of German militarism, and then let the professionals achieve them. The King had a "long talk" with Robertson on 1 July and was left convinced that French should be removed as Commander-in-Chief of the BEF. Attending a council of war in London in early July 1915, Robertson was asked at the end if he had any comments—he produced a map and delivered a 45-minute lecture, and when interrupted stood glaring at the minister. His presentation made a strong impression compared to the indecisiveness of the politicians and Kitchener. Robertson wrote to Kiggell (20 June 1915) that "these Germans are dug in up to the neck, or concreted" in "one vast fortress" ... "attack on a narrow front & we are enfiladed at once" ... "attack on wide front is impossible because of insufficient ammunition to bombard and break down the defences". Tactically, he urged "slow attrition, by a slow and gradual advance on our part, each step being prepared by a predominant artillery fire and great expenditure of ammunition" and stressed the importance of counterbattery work. He also (July 1915) advocated surprise, and realistic objectives to prevent attacking infantry outrunning their artillery cover and ragged lines becoming vulnerable to German counterattack. Maurice, who drafted many of Robertson's memos, had advised him (19 June 1915) that such attacks were best carried out in places where the Germans were, for political or strategic reasons, reluctant to retreat so were bound to take heavy losses. Robertson initially opposed the mooted Loos offensive, recommending (20 July) a more limited attack by Second Army to seize Messines-Wyndeschete ridge, and telling Sidney Clive (25