...of Colonel (now Major-General) A. H. Terry, of the 7th Connecticut. By the labor of these troops eleven batteries were constructed, at distances from the fort varying from 1650 to 3400 yards. Tybee Island is mostly a mud marsh, like other marsh islands on this coast, varied, however, by ridges and hummocks of firm ground. The distance along the north shore, from the landing-place to the advanced bat...