On the day after the victory the army marched back to Pretoria, having freed itself from the danger of immediate attack. The railway communications were now restored. Lord Methuen, on the 11th of June, attacked and defeated the commando of De Wet, and the garrisons along the line were materially strengthened. Buller, while the engagement at Diamond Hill had been going on, had, by some severe fighting, defeated the Boers posted on a strong position at Aliwal's Nek, and the same evening established his head-quarters at Joubert's farm, four miles north of Volksrust, the border town of the Transvaal.
Yorke had been busily engaged during the two days' battle, and had had several narrow escapes from the enemy's shot. Twice, before the guns were brought to the crest, he had made his way up the hill on foot to ascertain how matters were going there. A ball had passed through his helmet, and another smashed his field-glasses. He was, however, untouched, and when the day was over, he felt that he could now resign his commission without any appearance of want of zeal. When, therefore, General Roberts sent for him in the morning, after their return to Pretoria, he determined to speak to him at once.
"I have called you, Mr. Harberton, to tell you that I have just heard of another vacancy in your regiment, which will give you your step. I congratulate you upon it heartily, and I only wish that it had been from lieutenant to captain, in which case I should have pleasure in warmly recommending you for a brevet majority."
"I am very much obliged to you, sir, and your kindness makes it all the harder for me to say what is in my mind. I am desirous of resigning my commission. I only accepted it for service during the war, and although the war is not yet over, its end appears so near at hand that I feel that my object in resigning my commission will not be misinterpreted. You may remember, sir, that, when I had the honour of relating to you the story of my escape from prison here, I mentioned to you that I had been able to render some service to Mr. Chambers, the managing director of the Parfontein mine. I saw him as I passed through Bloemfontein, and he has been good enough to offer me a post as his assistant, which is likely to lead to great advantages. He will himself be returning to England with his family when things have quieted down, and is anxious that I should go to him as soon as possible in order that he may give me such instructions as will enable him to leave matters in my hands while he is away. I had in no case thought of remaining in the army, as I have no private means, and came out here to make my way in business. I should certainly have preferred to stay on until the end of the campaign, but the offer made me is so advantageous, that I am anxious to avail myself of it."
"Quite right, Harberton," the general said. "You have already shown that you possess all the qualifications required in an officer of the army, but it might be a long time before you had again such opportunities as those of which you have so brilliantly availed yourself during this war. I think your decision is a very wise one. You have done your share, and more than your share, in the events of the war, and have very markedly distinguished yourself. It shows that you have as much common sense as courage and quickness in making such a decision. Many a young officer, if he had gained as much credit as you, would have had his head turned, and refused even the most dazzling offer, with the result that years afterwards, when living in the dull monotony of a garrison town, he might bitterly regret having thrown away so valuable a chance. Personally, I cannot accept your resignation, but I can give you leave of absence until your name appears in the Gazette; and I do so all the more willingly as it is likely that we shall have a halt here for some weeks before we can obtain remounts and reinforcements. In sending home my despatches, which I shall do in the course of a day or two, I shall certainly mention you as having performed exceptionally brilliant service. Should you, while I am at Pretoria, have occasion to come here, I shall at all times be glad to see you. I suppose your servant will also want his discharge?"
"If you please, sir; he is still, I suppose, on the books of the Cape Town Rifles. He was not transferred to the Lancers."
Again thanking Lord Roberts for his kindness, Yorke retired, and half an hour later started with Hans and Peter for Johannesburg, where they arrived that afternoon.
"Welcome back!" Mr. Chambers said as he came out on hearing them ride up. "We have been thinking about you very anxiously since we heard that there had been a two-days' battle and very hard fighting, and knew that as an aide-de-camp you would be galloping about with orders in the very thick of it."
"It was pretty tough work," Yorke said, "and, as you see, my helmet and field-glasses have suffered, but I had not even a scratch."