These soldiers are like paratroopers on steroids. They can teleport wherever you want in 40 cell radius, they have 100 strength, powerful against cities.
I have conquered a 200+ defense city with 4 missile cruisers and a couple XCOMs, while others were waiting 2-3 cells outiside city. If you can build one every 2 turns in 3-4 of your cities and have enough missile cruisers and destroyers to protect against submarines you can destroy coastal cities at will..
P.S. only tested on Emperor
I have conquered a 200+ defense city with 4 missile cruisers and a couple XCOMs, while others were waiting 2-3 cells outiside city. If you can build one every 2 turns in 3-4 of your cities and have enough missile cruisers and destroyers to protect against submarines you can destroy coastal cities at will..
P.S. only tested on Emperor