Ul'rursh turns to you suddenly while on horseback "And now, the final leg of our journey. I will leave you with advice that is sure to see you survive in these harsh lands."
After a days ride, where the landscape has changed considerably into a lush green, you happen to stumble upon a valley. "This will do nicely" Ul'rursh commanded his men to stop and then began to construct Walls, Gates, Towers and what appears to be a Ditch. Ul'rursh hits a solid wall, which doesn't break under the weight of his arm. "Walls are obviously strong and durable against normal military units. They keep the aggressors out of your lands and keep your people and resources safe, only if you have complete walls though. You can upgrade your walls as you get wealthier. Walls can be found at Research > Structure Research > Wooden Palisade. A wall coverage of 5% and above will prevent invaders from conquesting & razing your land and harming your peasants. The soldiers of Ul'rursh man the walls and towers in defensive positons.
"For protection against plunders as well, you can erect City Gates which are simple to understand. If you have no City Gates, the enemy can access your settlement if your army loses the battle. If there are City Gates preventing access to your settlement the enemy has to break them down in order to reap any benefit from their assault even if they defeat your army in battle. However, City Gates are only effective if you have complete walls."
"For an added layer of protection, you can research the Ditch & Moat technologies which will supplement the defending capabilities of your army in invasions, providing there is a defensive army to begin with. These technologies can be found in Research > Special Research.
"A far more active and offensive form of defending your settlement from invasions is to erect Watchtowers and man them with Sentries. Your sentries can not only inflict casualties on the invading army, but they can also remain out of harms way by hiding in their lofty towers. The only way to bring down sentries is by bringing down the actual Watchtowers that are manned by them, and this means that your sentries have a longer lifespan than your conventional troops, making them a valuable asset at your disposal." The dream shatters.
"Well stranger, this is the end of this tour. I hope I have been of good service and that you have learnt much. If you are unsure of something, it is always good to ask in the Global Forums, Global Chat or a friend." He walks away, smiling that he can finally go. He stops and slowly turns to you again "And I did mean it: show me you have what it takes, prove me wrong... if you dare!"