Originally Posted by ofogs

An around the world move would work pretty much the same as above, except instead of using roads, there'd be a joint requirement for aircraft and shipping. The planners would still need to coordinate to get everything to the boats and planes, which would involve rails and trucks to get to and from the ports of embarkation and debarkation. The people will fly, along with select equipment. They then link up with it near their destination. Coordination for this happens several months to half a year out, at least, for a lot of planned deployments. Tom Clancy's Armored Cav gives a pretty good general description of the process in one of the scenarios in the end, though this is for a contingency operation with much less lead time.