At the same time that Hyakutake 's troops were attacking the Lunga perimeter , Japanese aircraft carriers and other large warships under the overall direction of Isoroku Yamamoto moved into a position near the southern Solomon Islands .
At the same time that Hyakutake 's troops were attacking the Lunga perimeter , Japanese aircraft carriers and other large warships led by Isoroku Yamamoto moved near the southern Solomon Islands .