Frederick Ernest Whitton, 1922 Encyclopædia Britannica, Volume 31…
“ Joffre had issued a new directive, to the effect that, the offensive which he had projected having proved incapable of realization, " further operations would be carried out with a view to forming a mass of manoeuvre on the left flank to carry out an offensive." This mass of manoeuvre was to be made up of the French IV. and V. Armies and the British, plus a new army the VI. to be made up of units moved by rail from other sectors, chiefly from the right. ”
