Levels of empire protection

This article is missing 4 methods which will be added either in a few minutes or in about 1½ day.

Empire protection
Safety matters the most, especially when that safety keeps everything the way it's supposed to be. Because Antonia is such a large and powerful empire/kingdom, protection and safety is the number one priority. Although you should keep in mind that no possible protection could keep gods from destruction and anything that can fly could theoretically cross the guarded areas.

Protection levels
Here is a list of protection levels which are levels we use to describe certain security methods. However you should not see this as levels certain cities have and certain cities do not have, the protection levels are included in every single area that is known by the government.

Method 1
1.5 km thick walls all around the city with a secured and patrolled gate in the eastern, western, southern and northern walls (located in the middle of each direction's wall). Each gate is patrolled 24/7 and secured with highly advanced technology. Thousands of guards are always prepared to work away any issues occurring at the gates and a standard amount of 50 to 70 guards are always live at the gates watching and protecting everything that comes in and out of the gate.

Method 2
Lethal projectiles and objectives are automatically set to help the government fight off any troublemakers. Turrets, spikes, barbed wires, tasers, rocket launchers, saws, explosives, traps, scanners to detect intruders and many more helping hands have been set everywhere around the border to automatically add a level of protection to the city and kingdom.

Method 3
The army is always prepared to take action if necessary. If the situation gets out of control really bad then the immortal ones are always there to help.

Method 4
Total lock down is also a very helpful level of protection added to every city since 1405 Y.C. Controlled by a sleeping guardian the entire city has an invisible dome surrounding it in a sphere shape becoming visible and interact-able. The dome is close to indestructible and besides that it also regenerates its damaged/destructed pieces, which is done by the sleeping guardian.