TOP FIVE SPECIAL UNITS

                                        civilization IV                                                   

1. Cossack (Russia)
      

Cossack Mounted Units

Unique unit for Russia; Replaces Cavalry Doesn't receive defensive bonuses Can withdraw from combat (30% chance) +50% vs. Cannons +50% vs. Mounted Units Can flank attack against cannons

-On the first place from my oppinion is Cossack that replacec Cavalry. Cavalry's strenght is also 15, but coosack has +50% bonus against them(mounted units) and cannon, what is great for the age when all civ's build cavalry because it is the most unit powerfull in that moment. Also when you attack a bunch of units on one tile cossack flank attacks the cannons and lower their energy if they exist on that tile you attack.

2. Immortal (Persia)

Immortal Mounted Units

Unique unit for Persia; Replaces Chariot  Can withdraw from combat (10% chance) +50% vs. Archery Units +100% vs. Axemen

- As you see you get great advantages and bonuses. 100% vs. Axemen and 50% vs. Archery units. If u get horses in your first city you can be gread ancient conqueror.


3. Landsknecht (Holy Roman Empire) 

Landsknecht Melee Units

Unique unit for Holy Roman Empire; Replaces Pikeman +100% vs. Mounted and Melee Units

- what to say, +100% vs mounted and MELEE units. In translation 100% against all units except catapults and longbowmans and archers in age of existance of this special units. They are the greatest units for defense, in all game next to the longbowman compared to his time, in my oppinion. Especially if u take consideration that you can promote them with +25 defense if you have barracks witch gives u +2exp to every unit you build.

4. Panzer (Germany) 

Panzer Armored Units

Unique unit for Germany; Replaces Tank  Doesn't receive defensive bonuses +50% vs. armored units Starts with Blitz

- great advantage considering to the time u get panzer. They have +50 against armoured units, great against tanks, and if you are little backward to get moder armour you will be more competitive to modern armor's than with normal tanks.


5. Skirmisher (Mali) 

Skirmisher Archery Units

Unique unit for Mali; Replaces Archer  1-2 First Strikes +50% city defense +25% hills defense

- the graters ancient deffenders, comparing to the arher he is more greater, with 1-2 first strikes +50 city defense and +25 hills defense. If u have good strategic tile on hill and if u build city there, 2-4 skirmisher will be great defense for a long time.