There are 4 different types of Units within World War Online:
- Infantry Units;
- Armored Units;
- Airforce Units;
- Navy Units.
Commanders unlock Units as their Military Rank increases. There are also three different classes of Units:
- Normal Units, which only cost Iron. They'll constitute the bulk of your Army;
- Supreme Units, which cost WWO-Influence or Money. They're much stronger than Normal Units but they fight in lower numbers;
- Tactical Units, which have special roles such as Conquering and Destroying Bases.