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Eventually, the 51st Highland Division were attached to IX Corps of the French Tenth Army; command of the corps was given to Major-General Victor Fortune of the Highland Division who in turn was under the orders of General Robert Altmayer of Tenth Army.
The resumption of the British offensive was intended to assist the French Tenth Army offensive against Vimy Ridge near Arras, by attracting German divisions to the British front, rather than reinforcing the defenders opposite the French.
In the spring of 1916 he convinced the chief of staff of the Tenth Army to adopt this method of concentration for a major attack at Tarnopol, and the effect in supporting the rapid advance of the infantry was impressive.
Ultimately, he was given command of the Tenth Army after it was virtually destroyed and Berti's replacement, General Giuseppe Tellera was killed in action.
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 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.