...bout half-past 8 A. M. we reached Charleston, where we unexpectedly encountered a company of rebel cavalry. A brisk skirmish ensued, in which the rebs were routed and made good time on a run toward Winchester . We advanced cautiously on toward Berryville, which we reached toward evening, and found a regiment of rebel cavalry upon a hill, drawn up in line of battle. A few pieces of artillery were soon p...