The Combine

The Alliance is also known as the Combine, the Union of Universes, and the Patrons (some of the official names often used in Alliance propaganda). According to the plot of the game universe, the Alliance invaded Earth and completely conquered it in seven hours. After that, a totalitarian regime was established on Earth, all freedoms and rights of earthlings are suppressed, and humans are also considered inferior creatures (as evidenced by the Alliance propaganda).

In addition, the Alliance is committing genocide against humanity: in addition to the mass extermination of people, a so-called “suppression field” is in place across the entire planet, which prevents human reproduction.

At the same time, the Alliance actively extracts Earth's natural resources, including water. The Alliance's viceroy on Earth was Dr. Wallace Breen, and the main headquarters of the local garrison was the Citadel in City 17.

The Combine, along with their Earthly representatives, are the main antagonists of Half-Life 2 and its sequels. The player, playing as Gordon Freeman, joins the Resistance and fights the Combine forces.
Little is known about the Combine's activities outside of Earth, but dialogue in Half-Life 2 suggests that they control worlds in different dimensions inhabited by different species.[1] The Combine occupation of Earth is depicted as a brutal police state. In City 17, a city in Eastern Europe, civil defense units acting as police regularly raid apartment buildings, interrogate citizens, and engage in wanton brutality. Combine military forces attack human resistance bases in an attempt to further consolidate their power in urban centers. Human citizens wear blue uniforms, live in designated apartment buildings, and are transported to different cities or locations on passenger trains at the behest of the Combine.

GO (civil defense),
soldier of the AAF (Alliance Armed Forces),
prison guard nova avenue,
Alliance Assault Brigade,
alliance ecologists,
PMC Our patrons,
Alliance Chemical Battalion,
Heavy Alliance Battalion,
Battalion Last Death,
elite soldiers of the alliance,
Air Force Combines
Alliance robots.

Strider The Strider's body is brown, beetle-like, and is mounted on three jointed legs. It has a rotating pulse turret mounted on its "nose" and a large cannon mounted directly underneath its body. The Strider is the Alliance's primary heavily armored assault unit.
Hunter The Hunter's body is somewhat rounded with a shiny blue-green exoskeleton covering it, and sits on three horse-like legs. In the center are two blue eyes. He has two chain devices under his eyes that he can pierce with the claws on his limbs, as seen when he pierces Alyx Vance with them. His feet have claws that he can easily use to cut his opponent.
Alliance drones,
a beetle-like stormtrooper,
the transporter carries soldiers to their positions,
use chemical weapons and capsules with Headcrabs.

Wallace Breen

resistance forces, PMC death to the alliance, new Odessa, white grove, victory mine, eastern black mesa, Gordon Freeman.

city ​​17 (capital) city ​​16 city ​​10 city ​​45 city ​​35 city ​​199 city ​​300 white grove (secret base) air exchanger victory mine (observation point) city ​​56

baton shocker,
9mm pistol,
Automatic machine gun,
MP7,
SPAS-12,
XM29 OICW,
grenades,
chemicals in the form of grenades,
Patrol Pulse Rifle,
Incendiary rifle,
Immolator,
Alliance Ground Turret,
manhak,
Patrol Sniper Rifle,
M60 heavy machine gun,
fragmentation grenade,
Desert Launcher, Launcher,
Headcrab projectile,
stationary grenade launchers,
Suppression device,
ball mine,
Heavy machine gun,
Alliance Laser Trap.

they experiment on people and other things