Although Yorke had been absent but a few days, the changes at De Aar were wonderful. Never even in the days of the gold fever in California was so great a transformation effected in so short a time. De Aar had grown from a little village of some forty houses, two or three shops, a church and school, with a little camp, into a great military centre. Captain Mackenzie of the Royal Artillery was in charge of a separate camp, which grew daily. Here in a large kraal he had upwards of a thousand mules and as many horses, all of which had been broken in and trained for military service. Not far away was the Army Service camp. Here were men capable of every kind of work that could be demanded--carpenters, wheelwrights, railway men, painters, plasterers, saddlers, and artificers of all sorts. Aided by Kaffirs working under their direction, camps and sheds were erected as if by magic, and in a couple of days a street of corrugated iron stores would spring into existence on the veldt. There was already a medical camp, with its Red Cross flag. The Yorkshire regiment had come up, and was under canvas on the other side of the railway. The Kaffir camp was also a canvas town, and here natives of many tribes, Basutos, blacks from Cape Town, mule-drivers and transport men, were clothed and fed. Breastworks had been erected by the troops and Kaffirs upon the hills around, and redoubts thrown up on the plains. On the morning after Yorke's return the colonel said to him: "I do not see any work to which I can put you here, Mr. Harberton. After what you have done I think you will be far more useful in scouting than in any other way. I have been thinking the matter over, and have come to the conclusion that you cannot do better than get some Kaffirs to act under you. I will give you an order on the head of their department to hand over a score of them to you. You can pick your men. They must, of course, be active and intelligent fellows; and although you speak a little of their language, it would be better to pick out some at any rate who understand English or Dutch. Your friend Grimstone, whose wife made your wig, has just come into camp with three or four hundred cattle and a number of horses and ponies. He is at present in the supply camp arranging the sale of his cattle. Some of his horses are too light for transport purposes, but they are, like the Basuto ponies, rough and hardy.