以下の英文を日本語に訳して下さい。
During 1915, the German armies on the Western Front increased the front line from one to three trenches, built a second trench system 1,500–3,000 yd (0.85–1.70 mi; 1.4–2.7 km) behind the front line and developed the defensive use of machine-guns and artillery, to restrict an attack to a bend (Ausbeulung) in the line. The Franco-British offensives in 1915 found the German defences in a state of continuous development, the building programme taking time to complete, due to a shortage of labour. In March 1915, Joffre concluded that a period of inactivity would benefit the Germans more than the French; General Ferdinand Foch, commander of the Groupe Provisoire du Nord (GPN), proposed an offensive in which a "general action" on the Western Front including the British, to confuse the defenders and pin down reserves, would complement a "decisive action", to break through the German defences at a place where the Germans would not be able to establish a new defensive front by a short retirement. Joffre accepted the proposals on 23 March, with the objective being the seizure of Vimy Ridge and exploitation of the success by an eastwards advance into the Douai plain. The French army had not completed an adaptation to siege warfare and much of the equipment necessary, particularly heavy artillery, did not exist. It had been impossible to synchronise operations in Artois with the First Battle of Champagne, which ended on 17 March. Debate within the army as to means and ends had led to two schools of thought, those who, like Joffre, favoured "continuous battle" (an attack without pause involving all resources) and advocates of "methodical battle" like Foch, who wanted to conduct offensives as series of attacks with pauses to reorganise and consolidate.
The theoretical bases of the forthcoming French offensive in Artois were collected in But et conditions d'une action offensive d'ensemble (Purpose and Conditions for Comprehensive Offensive Action) 16 April 1915 (and Note 5779) which had been compiled from analyses of reports received from the front since 1914. The document contained instructions on infiltration tactics, "rolling" barrages and poison gas, which were to be used systematically for the first time. Although doubtful about the capacity of the British to attack, Joffre wanted an offensive on the northern flank of the Tenth Army, to force the Germans to disperse their defences. At a meeting on 29 March, with Sir John French, the commander of the British Expeditionary Force (BEF), and Herbert Kitchener, the Secretary of State for War, it was agreed that the IX Corps (9e Corps d'Armée) and XX corps would be relieved at Ypres by British units and on 1 April, French agreed to attack at the same time as the Tenth Army.
お礼
本当にありがとうございます。 助かりました、論文のＯＫがでました。 ※確かにcustomよりhabitの方がいいですね。