There came, borne to us on the raw morning air, the long weird note of a bugle. It was directly before us. It rose with a low clear, deliberate warble, and seemed to float in the gray sky like the note of a lark. The bugle calls of the Federal and the Confederate armies were the same: it was the "assembly" ! As it died away I observed that the atmosphere had suffered a change; despite the equilibrium established by the storm, it was electric. Wings were growing on blistered feet. Bruised muscles and jolted bones, shoulders pounded by the cruel knapsack, eyelids leaden from lack of sleep--all were pervaded by the subtle fluid, all were unconscious of their clay. The men thrust forward their heads, expanded their eyes and clenched their teeth. They breathed hard, as if throttled by tugging at the leash. If you had laid your hand in the beard or hair of one of these men it would have crackled and shot sparks.