Army Technology * Level 2 - Requires 10,000 troops within your army. * Level 3 - Requires 60,000 troops within your army. * Level 4 - Requires 150,000 troops within your army. * Level 5 - Requires 300,000 troops within your army. Navy Technology * Level 2 - Requires 15 Combat Vessels * Level 3 - Requires 25 Combat Vessels * Level 4 - Requires 50 Combat Vessels * Level 5 - Requires 80 Combat Vessels Industrial Technology