"I will write a letter with my own hand and clear our honor from this foul slander. Spying is allowed in war, though I have never liked it, and the spy need deserve no mercy, but assassination is unworthy of any soldier, and a work of the devil, of which I humbly trust I am incapable, and also my king. Give this letter"--when he had written and sealed it--"to the messenger, Major Lovel, and see that he has a safe conduct through our army, and past our outposts." Lovel saluted and left the room, but outside he laughed, and said to himself, "Very likely it's true all the same, and a quick and useful way of ending the war. When Claverhouse dies the rebellion dies, too, and there's a text somewhere which runs like this, 'It is expedient that one man should die than all the people.' I wonder who those fellows are, and if they'll manage it, and what they're going to get. They have the devil's luck in this affair, for, of course, MacKay would be told nothing about it; he's the piousest officer in the English army."
Dundee received MacKay's letter during the long wait before the battle, and this is what he read: To My Lord Viscount Dundee, Commanding the forces raised in the interest of James Stuart.
MY LORD: It gives me satisfaction that altho' words once passed between us, and there be a far greater difference to-day, you have not believed that I was art and part in so base a work as assassination, and I hereby on my word of honor as an officer, and as a Christian, declare that I know nothing of the two men who are under arrest in your camp. So far as I am concerned their blood should not be shed, nor any evil befall them.
Before this letter reaches your hand we shall be arrayed against one another in order of battle, and though arms be my profession, I am filled with sorrow as I think that the conflict to-day will be between men of the same nation, and sometimes of the same family, for it seemeth to me as if brother will be slaying brother.
I fear that it is too late to avert battle and I have no authority to offer any terms of settlement to you and those that are with you. Unto God belongs the issue, and in His hands I leave it. We are divided by faith, and now also by loyalty, but if any evil befel your person I pray you to believe that it would give me no satisfaction, and I beg that ye be not angry with me nor regard me with contempt if I send you as I now do the prayer which, as a believer in our common Lord I have drawn up for the use of our army. It may be the last communication that shall pass between us.