No support brigades can be attached without losing paradrop ability.

Requires expensive in terms of research, production and escort Transport Planes.

Separate doctrine among Air doctrines to strike from air.

Over 2.7 times the industrial cost of infantry, and 50% more expensive in terms of manpower.

Add additional frontage equivalent to one extra province when dropped on top of an enemy unit.

(And if you are gamey, ninjaing victory points.) Good for getting troops to an area in a hurry. Specially trained and equipped infantry able to deploy via parachute.

Slightly weaker attack compared to Infantry.

About 80% more expensive than infantry in terms of industry, and 30% more expensive in terms of manpower and officers.

Reduced attack and movement penalties for fighting in hills and mountains.

Specially trained and equipped infantry focused on hill and mountain warfare.

Eats manpower and officers like little else.

Infantry consist of regular foot soldiers, supported by light anti-tank, artillery, and support weapons. Special forces and elite units are also part of this category. Fairly inexpensive, while providing a more solid force than militia units. However, unlike naval or air units, land units do tend to require large investments of officers and manpower. Compared to naval or air forces, most land units are fairly cheap per-brigade, and they do not take as long to build as ships or aircraft. Thus, your army is the central branch of your armed forces. Since humans live on land, all wars must ultimately concern themselves with land matters.

6.4 Self-Propelled Rocket Artillery (SP R Art).

Hoi 3 black ice