...r, Lieutenant-Colonel B. S. Roberts, who, at Valverde, January 21st, precipitated a decisive engagement with the enemy, where the latter had the advantage of position. It must be said in justice to Colonel Roberts , however, that had not two of his subordinates shown a lack of their commander's dash, the result of that day's battle would have been different. Mr. Pettis intimates that all went well on the fiel...