The key to survival in Utopia is a strong and sustainable military. Almost everything else you do will likely be focused on being able to develop this area of your province. Your military consists of four (4) basic military units, as well as several generals to lead them in combat. I will take this opportunity to explain how your military structure works.
Your Generals
Each province maintains an armada of five generals, with slight variations for certain races. One of these generals remains at home at all time to lead your defense. The remaining generals may be sent to combat at any time, and they remain with your army during battle. Without a general at home, you will not be able to send additional forces to combat, so you have the ability to maintain five separate attack brigades at any given time. In any attack, you may send additional generals, giving you more strategic options and resulting in 3% additional effectiveness for each general sent.
Your Military Units
Depending on your race, you will have available to you a different set of troops for battle. While your primary three units -- a basic soldier, an offensive specialist, and a defensive specialist -- will all have the same relative strengths, each race has a fourth elite unit with both offensive and defensive capabilities that vary. In addition, different races may have different training costs for each unit.
Training the Military
Acquiring basic Soldiers is based on the draft of your peasant population. Drafting an individual requires time, and no more than 1% of your peasant population can be drafted each day. You may set a Draft Rate to determine what portion of your total populace will be drafted into the military. For example, a 30% Draft Rate will train 3 of every 10 people in your kingdom into your army.

Once your peasant has been trained into a soldier, you can spend more time and money to train them into any of the more advanced combat forces. This allows to you to build a stronger army without consuming a larger portion of your peasant population.

Military Expenses
After your military is drafted, you still must spend money to maintain it each day, in the form of wages and training expenses. These costs, $1 / 4 Troops, will automatically be paid daily from tax revenues. A lack of funds will prevent your army from making attacks on other provinces.

The Actual Numbers: Military Capabilities
  Unit #1
Basic Soldier
Unit #2
Offensive
Unit #3
Defensive
Unit #4
Elite Force
Offensive
Battle Strength
130*
Defensive
Battle Strength
103*

The Actual Numbers: Your Elite Unit
  Humans Elves Dwarves Orcs Faeries Halflings Avians Undead
Offensive
Battle Strength
53671465
Defensive
Battle Strength
46628435

The Actual Numbers: Base Training Costs
  Unit #1
The Soldier
Unit #2
Offensive
Unit #3
Defensive
Unit #4
Elite Force
Humans ---$300$325$1000
Elves ---$350$375$1050
Dwarves ---$325$400$1275
Orcs ---$325$325$1100
Faeries ---$425$350$1350
Halflings ---$275$300$725
Avians ---$300$325$1000
Undead ---$325$350$1100