I think, when building your own briefing, fluency with the history is necessary. It'll allow you to build accurate, historical lists that you can then balance for play-ability. In other words, research is key. Thanks to a number of folks (including a certain Marine Corps historian) and a ton of online resources I've been able to start hashing out the nitty gritty of the campaign.
So, here I'm going to post a timeline of the fight with some annotated game design notes (in italics) that have helped me shaped my thoughts on how to put the briefing together:
OK, the first big question here is: IS this a mid-war or early-war breifing or does the Pacific really exist in it's own Meta? The Marines on Corregador used a 1930's force organization, the PS and PA units didn't have "modern" equipment and the Japanese aren't much changed from what you'd see in 39 to 40. The major difference would be better air support and some of the better (such as it is) tanks are more available than they would have been in Nomonhan.
I'm still debating but I'm starting to lean heavily towards early war. What do you think?
Likely to be the first lists in the briefing. FV Japanese with SNLF support versus 8 million Bayonets-esque Philippine Army force.