Gamelin had been considering reform of GQG since November, owing to the complexity of its organisation and friction between him and Georges over their individual responsibilities. A new structure was implemented on 6 January 1940, despite the protests of Georges. Georges ceased to be involved with the GQG and a new headquarters staff was drawn up with officers taken from the bureaus supplemented by some seconded from the field armies. The Northeast Army was recognised as the most important in the field and to ensure its logistics were handled effectively the 4th bureau took over direct responsibility for its rear supply lines. To facilitate this the officers of the fourth bureau and the inspector-generals, whilst remaining under the nominal command of the major-général, received their orders direct from Georges.
