These were the soldiers whose example became our chief teacher in the art of war. Greenhorns as we were, they received us kindly into their fellowship, and, while they criticised freely, they were ever ready to give us full meed of praise for anything we did well. We were scarcely settled in our brigade camp before orders came which set the whole army in motion. From picturesque Hagerstown we marched toward the Potomac, and encamped for a few days in a grove of magnificent oaks. There was some musical talent of the popular sort in our regiment, and it had crystallised into a glee club whose free concerts about the camp-fires were the delight of the whole brigade and did much to make us pleasantly acquainted with our new friends. One of the men was an expert performer on the banjo, and he had brought his dearly beloved instrument with him. Poor fellow, he was more fit for the concert-room than for a soldier's life, and a few weeks afterward he succumbed to the toil of the march. He "straggled" and was gobbled, banjo and all, by the Confederate cavalry, and we saw him no more. Reluctantly we left our pleasant camp under the oaks, and a short march brought us to the banks of the Potomac and in view of a pontoon bridge. That river was a Rubicon. On the other side of it lay the debatable land, the region of bloody battle, and the bridge which, like a dark line of fate lay across the water in the glow of twilight, seemed the final decision of our destiny. We had dreamed that we were to be employed in garrison duty to relieve older and more experienced troops. Now we knew that we must take our share, raw as we were, in the toil and peril of the coming campaign. Soldiers never know their destination on the march. Even the officers, unless they be corps or division commanders, are usually as much in the dark as the humblest privates, and the river, with its pontoon bridge was a revelation to our veteran friends as well as to ourselves. We listened to their comments with hushed attention. "Well, here we are once more; here is the river and there are the pontoons, and we are going over into Virginia again. The inhabitants of the land are all rebels, and yet the last time we were over there our generals were mighty tender toward them. No foraging was allowed, and we submitted tamely; we spared the inhabitants. But this time, may the gods do so to us and more also if we spare them!" There was something of the Cromwellian spirit among these Yankees, and in spite of the provost guard, they made good their threat.