A force consisting of portions of the 4th Marine Raider Battalion and the 103rd Infantry Regiment landed at Oloana Bay on the south coast of Vangunu Island on 30 June. From there they marched overland to Vura village which overlooked Wickham Anchorage, the first of the objectives of the original Allied plan. By 12 July, Vura was secured and garrisoned. Meanwhile, the remainder of the 4th Marine Raider Battalion captured Viru Harbor, supported by dive bombers, on 30 June, after advancing overland from Lambeti Plantation. They had moved to the plantation by boat on 27 June from Segi Point, having been dispatched there on 21 June during a preliminary operation. Another company from the 103rd Infantry Regiment relieved the Marines in the harbor on 4 July, having landed at Segi Point on 30 June when the Marines' advance had been delayed.