On the 7th inst. the 15th and 28th regiments landed on a Peninsula, at the mouth of the River, but the enemy not chusing to shew themselves, the General, after reconnoitring the country, reimbarked them. A few days after, the 27th and 33d regiment went fifteen miles up the River, and dispossessed the Rebels of a post they had at that place called Brunswick. They took a few prisoners, and had one man killed. After executing this business, they returned to the ships with a seasonable supply of twenty bullocks. On the 15th inst. the 15th, 28th, 33d, 37th, and 54th regiments landed, and encamped near a demolished post opposite to our shipping. The 57th is encamped on the opposite shore, and the 46th is still on board. Part of the Rebels are within two or three miles of us, but their strongest post, or chief dependence, is at Wilmington, about twenty miles from hence.