This timeline is still sketchy, but the idea of it is a radically different reorganization of the United States Army following the collapse of the Soviet Union. The POD is in 1988, but the first significant event is a coup in Iraq following Operation Desert Shield which necessitates a large-scale occupation which lasts for a significant amount of time. The Clinton administration decides that saving money by trimming major weapons procurement and having a larger more "people-smart" military is the way forward.
This thread is mostly for the US Army's 2015 organization, but any feedback would be welcome. The Marines have been worked on a bit, but I don't know much about other services.