new tactics, now had more soldiers on the Western Front than the Allies. Germany launched the full-scale Spring Offensive starting on 21 March against the British and French lines, hoping for victory on the battlefield before the American troops arrived in numbers. The Allied armies fell back 40 miles in confusion, and, facing defeat, London realised it needed more troops to fight a mobile war. Lloyd George found half a million soldiers and rushed them to France, asked American President Woodrow Wilson for immediate help, and agreed to the appointment of French General Foch as commander in chief on the Western Front. He considered taking on the role of War Minister himself, but was dissuaded by the king, and instead appointed Lord Milner. Despite strong warnings that it was a bad idea, the War Cabinet decided to impose conscription on Ireland. The main reason was that trade unions in Britain demanded it as the price for cutting back on conscription exemptions for certain workers. Labour wanted the principle established that no one was exempt, but it did not demand that conscription actually take place in Ireland. The proposal was enacted but never enforced. The Catholic bishops for the first time entered the fray and called for open resistance to conscription. Many Irish Catholics and nationalists moved into Sinn Féin, a decisive moment marking the dominance of Irish politics by a party committed to leaving the UK altogether. At one point Lloyd George unknowingly misled the House of Commons in claiming that Haig's forces were stronger at the start of 1918 than they had been a year earlier – in fact, the increase was in the number of labourers, most of them Chinese, Indians and black South Africans, and Haig had fewer infantry, holding a longer stretch of front. The prime minister had used incorrect information furnished by the War Department office headed by Major-General Sir Frederick Maurice. Maurice then made the spectacular public allegation that the War Cabinet had deliberately held soldiers back from the Western Front, and both Lloyd George and Law had lied to Parliament about it. Instead of going to the prime minister about the problem Maurice had waited and then broke King's Regulations by making a public attack. Asquith, still the Liberal Party leader, took up the allegations and called for a Parliamentary Inquiry. While Asquith's presentation was poorly done, Lloyd George vigorously defended his position,