Subject to these reserves it may be said that Sir Redvers Buller at the beginning of November had to choose between two lines of operations, that by Natal and that by the Cape. The cardinal principle is that you must never divide your force between two lines of operations unless it is large enough to give you on each of the two lines an assured superiority to the enemy's whole force. Sir Redvers Buller's design, however, violated this principle. He neither determined upon action with all his might through the Cape Colony nor upon action with all his might through Natal, but divided his effort, directing four of his seven brigades to Natal and the other three towards the Orange River; half his cavalry brigade going to Colesberg, and a mixed force of the communication troops to Sterkstrom on the East London line. This design gave no promise of effecting the dominant task, the crushing of the Boer army, though it aimed at grappling in detail with several of the subordinate tasks; but its execution proved as indecisive as its conception. In Natal the main force under Sir Redvers Buller himself completely failed in the attack on the Boer army at Colenso on December 15th; Lord Methuen's advance for the relief of Kimberley came to a standstill at the Modder River, and met with a serious repulse at Magersfontein; while the smaller parties of Gatacre and French have made little headway against the Free State troops and the rebellious Cape farmers. The fifth division, the bulk of which was directed to Natal, has been added to Sir Redvers Buller's force, without having enabled him as yet to strike the decisive blow or even to prevent a determined assault upon Ladysmith by the Boer army. That assault is believed to be now impending, and its delivery will close the second chapter of the war. If Sir Redvers Buller can win his battle in Natal while Sir George White is still unconquered, the military power of the Boers will receive a great shock, and the issue of the war will no longer be doubtful, though its end may be distant. But if Sir Redvers Buller should again fail the result must be to leave Sir George White's force in extreme peril, to give the Boer forces the spirit of a veteran and victorious army, and to encourage the Dutch element at the Cape to take an active part against the British.