I like the idea for the introduction of mines, that is a big part of strategy on the 20th century era.
I have also amalgamated a number of new ideas for COW, including specialised research doctrines, and infrastructure implementations.
Here is a copy/paste from an earlier thread..titled; New gaming units (March).
MARINE:
Requirements; Barracks lvl. II,
Naval Yards lvl. I
Infantry lvl. III
Strength: 4 on any terrain except mountains (-25%)
Increased speed on coastal cities and water for embarkation & disembarkation
PARATROOPER;
Requirements; Barracks lvl. II
Airbase lvl. I
Infantry lvl. III
Can only land on visible terrain,
Load time, 30 - 60 minutes,
On enemy ground landing strength; +25% mountains, +25% City, +50% hills/forest/jungles, +10% grassland
Cannot land on occupied ground
GUARD;
Requirements; Infantry lvl. I & militia lvl. I
Strength at 2.0 capacity
Can only be stationed in cities
Decreased morale loss to the city stationed
% increase to counter spies/espionage
Only defends
RANGER UNIT:
Requirements; Requires motorized infantry lvl. II
% strength increase in forests, jungles, hills
% increase in health healing
STEALTH BOMBER; (1945 - 1954 era)
Requirements; tactical bomber lvl. VI
Ignores radar
RADAR BASE
Requirements; Research
lvl. I Airbase
Decreases fog of war where built
CAPITAL WORKS;
Attributes; lvl. I increase wealth 10%
lvl. II increase wealth 10%
lvl. III increase wealth 10%
Can only be built in capital city
HOSPITAL;
Attributes; Increased morale & healing
Population growth
GROUP I; ALLIED TYPE
Infantry; Increased HP, Marine unit
Increased HP motorized infantry
Decreased cost artillery
Faster production time, fighter wing
Armour; Increased HP, heavy tank
Increase HP, mobile artillery
Naval; Increased HP, Destroyer
Increased HP, Carrier
Air; Increased HP, strategic bomber
Special; Faster research time strategic bomber & radar.
GROUP II; AXIS TYPE
Infantry; Increased HP, anti air
Faster production time for infantry
Increased HP, paratrooper
Armour; Increased HP, light tank
Increased HP, armoured car
Naval; Increased HP, submarine
Increase HP, cruiser
Air; Increase HP, tac bombers
Increase HP, rocket fighter
Special; Increase HP, rail gun
Decrease cost, missile
GROUP III; SOVIET TYPE
Infantry; Faster time militia production
Increase HP, artillery
Decrease cost commando
Armour; Increase HP, medium tank
Increase HP. mobile anti air
Naval; Increase HP, Nuclear submarine
Air; Reduced research time, fighter wing
Special; Increased capacity for espionage (upgrade spies)
Reduced cost, atomic research & nuclear power research
GROUP IV; EASTERN TYPE
Infantry; Increased HP, infantry
Increased HP, anti armour
Increase HP, guard
Armour; Increase HP, light tank
Increase HP, tank destroyer
Naval; Faster production time, submarine
Increase HP, Battleship
Air; Decreased cost, fighter wing
Increase HP, Naval bomber
Faster research time, jet fighter