After the annexation of the Orange Free State railways, the Chief of the Staff agreed that the railway staff officers in that State should be under the orders of the Director of Railways through his Deputy-Assistant-Directors; and a like course was adopted shortly afterwards in respect to the railway staff officers in Cape Colony. In this way an undivided chain of responsibility was secured, affording a much greater guarantee of efficiency alike in control and in actual operation. Concerning the Deputy-Assistant-Directors, Sir Percy Girouard says they were found to be of great benefit to the railway officials, who appreciated their work and laboured in hearty co-operation with them; though they experienced difficulty in establishing their position with the Generals and Staff officers, to whom the arrangement was an entire novelty, and one they did not at first understand. In the first instance the principle of military control applied specially to the lines in Cape Colony, those in Natal being still operated by the Natal Government Railway Department, with certain assistance in the matter of repairs; though after eighteen months of war, the military transport system first established in Cape Colony became uniform throughout British South Africa. TRANSPORT CONDITIONS The need for the elaborate organisation thus brought into existence was all the greater because of the difficulties by which those responsible for the conduct of military transport were faced. In November, 1899, considerable portions of the lines both in Cape Colony and in Natal were in the possession of the Boers, so that, beyond a certain distance, the British would have to fight for every mile of railway before they could make use of it. After, also, regaining possession of the lines on British territory controlled by the Boers, they would require first to capture and then to operate those on the enemy's territory; and in each case they would have to be prepared to repair the damage the enemy would be certain to do to the lines in order to prevent their use by the advancing forces. Meanwhile the traffic must be kept open, as far as possible, for the conveyance of troops and stores to the theatre of war and for the carrying out of such strategic movements as the requirements of the military situation might render necessary, adequate protection of the lines being meanwhile assured. There were, in fact, occasions when the whole issue of the campaign seemed to turn upon the question as to whether or not the British could either secure possession of the railways or, alternatively, repair them as fast, more or less, as the enemy could demolish them.