Mechanized Infantry are a variant of Infantry units which are heavily armored and suitable to accompany heavy troops, such as tanks.
Mechanized infantry is distinguished from motorized infantry in that its armored vehicles provide a degree of protection from hostile fire, as opposed to "soft-skinned" wheeled vehicles (trucks or jeeps) for motorized infantry.
Mechanized infantry can maintain rapid tactical movement. They require more supplies, fuel and components, and a comparatively larger proportion of manpower is required to crew and maintain the vehicles as opposed to Motorized Infantry.
The Mechanized Infantry is a fast unit, well-suited for a range of missions, and through support and flank protection greatly increase the survivability of heavy armor such as Main Battle Tanks. They are capable of conquering and holding Provinces or Cities, and have some protection against missiles. They can be transported by air.
They are particularly strong in open terrain, but vulnerable in cities, mountains, and other difficult terrain.