WARFARE EVOLUTION BLOG. In our last adventure, we explored the worldwide military markets using three recent reports, and integrated those into the TAM-SAM-SOM model (total addressable market, serviceable addressable market, and serviceable obtainable market). That expedition gave us a macro-view of things. Now, it’s time to put on our rubber gloves, get out the sharp knives, and carve the military market into edible segments. The most objective way to dismember this massive creature is to cut it up by platform, so we’ll start with the largest volume segment: ground combat vehicles (GCV) and tanks.