Special Forces
From Conflict of Nations Wiki
Special Forces Infantry are specifically trained in rugged terrain and in counter-insurgency missions. These elite warriors are always first on the ground and will not wait to occupy territory, instead moving on to their next kill. In terms of damage, Special Forces have the highest Hit Points attributed to an infantry unit due to their efficiency and stealth. They are absolutely invisible if they are not fighting, and being stealthy themselves, they have the capacity to reveal other stealthy units. Enemy bunkers? What enemy bunkers? Walls do not dissuade Special Forces troops, the only thing that may slow them down is a Weapon of Mass Destruction, but even then, they have some protection. And as versatile as they are, they can be strategically relocated to any location around the globe via airlift.
Features
Special forces units do not trigger a Declaration of War when they conduct covert operations behind enemy lines, and might be well suited to being dormant agents for future wars, as well as behind-the-lines reconnaissance.
Important to note: Special Forces units will conquer territory but will not occupy it. While in transit, these units will not accrue air or helicopter damage. They have high bonuses on some terrains.