It was the more necessary that Methuen should strengthen his position, since with every mile which he advanced the more exposed did his line of communications become to a raid from Fauresmith and the southern districts of the Orange Free State. Any serious danger to the railway behind them would leave the British Army in a very critical position, and precautions were taken for the protection of the more vulnerable portions of the line. It was well that this was so, for on the 8th of December Commandant Prinsloo, of the Orange Free State, with a thousand horsemen and two light seven-pounder guns, appeared suddenly at Enslin and vigorously attacked the two companies of the Northampton Regiment who held the station. At the same time they destroyed a couple of culverts and tore up three hundred yards of the permanent way. For some hours the Northamptons under Captain Godley were closely pressed, but a telegram had been despatched to Modder Camp, and the 12th Lancers with the ubiquitous 62nd Battery were sent to their assistance. The Boers retired with their usual mobility, and in ten hours the line was completely restored. Reinforcements were now reaching the Modder River force, which made it more formidable than when it had started. A very essential addition was that of the 12th Lancers and of G battery of Horse Artillery, which would increase the mobility of the force and make it possible for the General to follow up a blow after he had struck it. The magnificent regiments which formed the Highland Brigade--the 2nd Black Watch, the 1st Gordons, the 2nd Seaforths, and the 1st Highland Light Infantry had arrived under the gallant and ill-fated Wauchope. Four five-inch howitzers had also come to strengthen the artillery. At the same time the Canadians, the Australians, and several line regiments were moved up on the line from De Aar to Belmont. It appeared to the public at home that there was the material for an overwhelming advance; but the ordinary observer, and even perhaps the military critic, had not yet appreciated how great is the advantage which is given by modern weapons to the force which acts upon the defensive. With enormous pains Cronje and De la Rey were entrenching a most formidable position in front of our advance, with a confidence, which proved to be justified that it would be on their own ground and under their own conditions that in this, as in the three preceding actions, we should engage them.