The allied forces drew a ring round the south and east sides of the town, and the sea guarded it on the west, but by way of the north and north-east the Russians had free passage at all times, and could introduce fresh troops and provisions and all the material of war at will, and so the defence was in a state of continuous renewal, and fresh blood was always pouring in to replace the terrible waste inside. By those open ways also they sent out army after army to creep round behind the besiegers, to harry and annoy them, and this it was that led to some of the fiercest battles of the campaign. The knowledge also that great bodies of Russians were at large in their rear, and only waiting, opportunity to attack them, kept the Allies perpetually on the strain, and hurried musters in the dark to repel, at times imaginary, assaults were of almost nightly occurrence. Failing complete investment--when starvation, added to perpetual and irretrievable wastage, must in time have brought about a surrender--the Allies could only pound away with their big guns, and hope to wear down the heart and pride of Russia by the sheer dogged determination to pound away till there was nothing left to pound at. The later attempts to breach and storm, to which all these gigantic efforts were directed, were but a part of the same policy. Russia was to be crushed by the combined weight of England and France and Turkey, and, later on, Sardinia. It was very British, very bull-doggy, but it was also terribly wasteful and costly all round. The Russians had expected the attack on the north side, and had made it almost impregnable. When, by their flank march, the Allies came round to the south, the town was absolutely open and unprotected, the streets running up into the open country. Before the Allies could gird up their loins for a spring, earthworks and forts had sprung up in front of them as though by magic, and the only means of approach was by the slow, hard way of parallels, trenches, and zigzags. And all this it was that made up the Crimean War. But our boys were busy, and so kept happy in spite of discomforts without end.