that, without compromising speed, range and fighting ability overmuch. i was thinking of a type of rapid deployment force that can quickly offload troops (maybe not as quick as seaplanes in the case of the japanese.) perhaps side-unloading marines to remote, lightly defended islands or spots in some continent may conduct a preliminary attack ahead of a main force. examples for the japanese are midway islands and wake. they could also be used to counter-invade enemy forces that have just landed, like in tulagi, guadalcanal. the marines would carry only small arms and light weapons but a heavier-armed contingent would folow shortly.