The Marines invade in force against a thinly held beachhead, defended with lots of AT and HMGs. I spread the AT weapons out along the second row of hexes in from the beach for the most part, keeping a reserve force just back from that line of infantry with good leaders ready to charge into the Marines to try to keep them from consolidating their hold. The Marines landed in 3 groups, with a large force to the north, another in the center and a smaller one to the south. In hindsight, the southern force would have better been used in the center, as trying to take an entrenchment became a bit of a boondoggle as Japanese and Marines traded little damage but lots of morale issues. Overall the Japanese took pretty heavy losses, but in the end, while I could keep the beach itself secure, the Marines just could not completely dislodge the Japanese in the 3rd and 4th rows in, but the Japanese were never able to take more than 6 steps of Marines, including a step of LVT4s that fled the beach and left the board. This one deserves another play to work out the puzzle a little bit more.