[ WP ] Earth is at war with an alien race that has conquered most of the world . You are sent back in time to try and change history and shape Earth into a planet that can defend itself against the aliens .

`` Are you ready?'' The stoic voice echoed off of the dark walls as muffled air raid sirens droned in the distance. 
 
 It had only been a few months since the invasion began. The aliens came under a symbol of peace and friendship, but when they discovered how rich our planet was in natural resources their tones changed. They enslaved millions and killed any who resisted. To send a message they destroyed Washington, Beijing, and Cairo. 
 
 Europe is mostly in tact, but not for long. The last I heard, Moscow had fallen. Or what was left of it. It has been days since the last message from the Russian Federation was received. The English have kept the channel open the best they could, but such efforts are surely futile. 
 
 We thought we were safe here in Vienna, but they have already arrived from the North. Since we had no warning we can only assume Prague has received the same fate as Cairo and the other cities that were vaporized in the blink of an eye. 
 
 `` I am ready.'' I replied, my voice shaking. 
 
 My mission is clear: Go back in time and unify humanity in order to build a stronger and more defensible Earth. I must create a system that will give way to a militarized planet. 
 
 It is n't that simple, however. In order to unify all people - I must see that certain... obstacles to unification are overcome. Differences in race and religion must be forgotten. Hopefully through peaceful conversion and assimilation, but violence may be necessary to create a homogeneous population of people across the world who see each other as brothers in every aspect. 
 
 I do n't know how I will accomplish this. All I know is the identity of the man I must go back in time and kill so that I may replace him. A virtually unknown artist in the heart of Europe. The year, 1906. 
 
 We have manipulated the past in small increments, and set the ball in motion. We have already sent an operative back to 1914 to assassinate an Archduke in an attempt to start a war. Hopefully I can work my way to the forefront of it in 8 years. 
 
 `` Very well,'' my colleague said back `` Good luck, Adolph.''
