Join The Combine

Little is revealed of the Combine's rule outside of Earth, but dialogue in Half-Life 2 states that they control worlds in different dimensions and inhabited with a range of species.[4] The Combine occupation of Earth, however, is shown to be similar to a police state. In City 17, a generic Eastern European city, Civil Protection units are seen frequently, often conducting random searches of apartment blocks, interrogating human citizens and engaging in random police brutality. The military Overwatch forces of the Combine are shown attacking human resistance bases in an effort to further solidify their control. The citizens themselves are all clad in blue uniforms and live in designated apartment blocks. Citizens are shown to be moved around to different cities or locales at the Combine's will, using passenger trains.[5] Vortigaunts, alien creatures from the original Half-Life, are also shown to have been enslaved, and are observed in various jobs such as janitors. According to Half-Life 2: Raising the Bar, the Combine are draining Earth's natural resources, including the sea, to be used on other Combine worlds.[1]
At the heart of the Combine's command structure in Half-Life 2 is the Citadel, an enormous structure of Combine construction that reaches high into the skyline and delves deep underground. Located within City 17, the Citadel serves as the primary headquarters of the Combine, housing both Combine Advisors and the office of the Earth administrator, Wallace Breen. Breen is frequently seen on large screens around the city from which he spreads propaganda. The Citadel projects an energy field that is able to prevent human reproduction,[6] as well as a field that keeps dangerous alien wildlife out of the city.[7] In addition, the Citadel contains a trans-dimensional teleporter which allows the Combine to travel between their native universe and Earth.[8] The Citadel also contains construction facilities for various synthetic Combine combat machines.



Combine History And Weapons[en.wikipedia.org]