We had some epic amphibious battles using the Solmon Islands map in the CAP event. The included Naval Surface engagments, Naval artillary bombardment, and even swimming those LVTs to shore for the capture.
At the time I really wanted Higgens boats, but I knew that the maps would have to be specially tailored for them to work. Essentially, Map rooms would have to be located on the beach very close to the water (close enough so that when dropped from the beach the troops would run for them). We kicked around the idea of a "D-Day" map using map rooms close to the shore to show whether a beachead was secured, but given that there are few people willing to drive an LVT around, it just didn't seem to justify the effort.
But still, those CAP frames from 2003 were some of the best times I had in AH.
-Sik