The greater part of the guns were also placed in position, especially on the north and eastern portions of the lines, and the remainder were being mounted as fast as it was practicable. They were well manned by Volunteer and Militia Artillerymen, drawn from every district which the invaders had left accessible. By the 13th the eastern section of the fortifications was strengthened by the arrival of the remnants of the Ist and Vth Army Corps, which had been so badly defeated at Chelmsford, and no time was lost in reorganising them and distributing them along the lines, thereby, to a certain extent, leavening the unbaked mass of their improvised defenders. It was generally expected that the enemy would follow up the success by an immediate attack on Brentwood, the main barrier between Von Kronhelm and his objective--our great Metropolis. But, as it turned out, he had a totally different scheme in hand. The orders to Lord Byfield to evacuate the position he had maintained with such credit against the German Garde and IVth Corps have already been referred to. Their reason was obvious. Now that there was no organised resistance on his right, he stood in danger of being cut off from London, the defences of which were now in pressing need of his men. A large amount of rolling stock was at once despatched to Saffron Walden and Buntingford by the G.E.R. and to Baldock by the G.N.R., to facilitate the withdrawal of his troops and stores, and he was given an absolutely free hand as to how these were to be used, all lines being kept clear and additional trains kept at his disposal at their London termini. [Illustration: THE LINES OF LONDON Rough sketch showing approximately the lines of entrenchments constructed for the defence of the Metropolis.] September 13 proved a memorable date in the history of England.