Special Forces cost more than regular troops of course, but they are usualy better than those aswell. Some marines can and will be usefull for the Italian army, since you can, if you manage to get naval supremacy in the mediteranian, do some naval invasions to cut off enemy troops in africa or, more importantly, take the Suez and Gibraltar to lock out, or lock in, parts of the royal navy. The UK, USA and Japan basicly need marines, since they will do alot of naval invasions. Countries like Switzerland, Austria and Italy will benefit greatly from mountaineers if defending for example. Special forces are situational of course.
