Euan and I got BD-005 "Ultimate Insult" kicked off this morning. This is a tricky looking scenario for both sides, as the Japanese are counterattacking through Mud (E3.6) (and Mist (E3.32) for the first 2 turns).
Not the most ideal start for the USMC, as they lose their 9-2 leader to the SAN, and the 100mm OBA radio malfunctions.....
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When Jim and I played this one, my Marines faired poorly on the left and did extremely well on the right. The Japanese can launch a turn 2 banzai on the left with excellent chances of getting on the hill if the Marines are not reading the terrain correctly, as the mist will give them enough cover to make it across the dead ground between Hill 1, Hill 3, and Charlie Hill. Then the Marines are going to find themselves hard pressed as their flank is turned, and they lose most good LOS lines from the right side ridgeline to the now well positioned Japanese determined to roll them up on the flank.
My saving grace was a MMG nest in the foxhole where you see the Sherman and the OBA blast area over on the right, same hex as you guys chose, who managed 3 fire phases of ROF tears to pound down the Japanese attackers enough to prevent them crossing the railroad. But for a good part of the game, I was severely concerned about them making their way safely into that center gully in between the Marine ridges on the left and right.
IMO, the Japanese are best served with a left flank assault followed by rolling up the flank, and have some units ready to take out the Marine detachment via CC on the lone pinnacle at dead center on turn 1. (Where you can see a foxhole there, a single detachment must set up there.) I assume you could try the right flank and a similar strategy, but the terrain and the mud are far less forgiving on time for movement, and Charlie Ridge is usually better defended than what the Marines can spare to hold the left.
Best of luck to you both, this one is a killer scenario
Jon