... materially reduced before the end of June, by the expiration of the terms of service of many of the regiments which had not re-enlisted. In this way we fell back to Cassville, in two marches. At Adairsville , about midday on the seventeenth, Polk's cavalry, under Brigaadier-General Jackson, met the army, and Hardee, after severe skirmishing, checked the enemy. At this point, on the eighteenth, Polk's a...