Currently reading: the US Army Campaigns of the Mexican War Series. According to the introduction, it’s supposed to be 8 pamphlets, but there’s only 4 available. And the publication order is not conflict-chronological. If you want to read it in timeline order, you have to start with 73-2, then 73-1, 73-4, and 73-3. On top of all that, they’re all written by the same guy, and it looks like there haven’t been any updates in several years.