Yokohama Base

Air photo of Yokohama Base, circa 2001.

Yokohama Base was the location for two different military bases staffed by two different armies. Prior to the BETA Invasion of Japan, Yokohama Base was a military complex staffed by the Imperial Army, and was also the home base for Unit 90, an anti-BETA bioweapons research group. The base was lost to the BETA after the invasion, and became the site of Objective 22, the Yokohama Hive.

In 1999, Objective 22 was captured by allied forces in Operation Lucifer, along with its Hive Reactor intact. After its reconstruction, Yokohama became the main base of the UN 11^th Force, and the headquarters of Alternative IV, where its chief researcher, Professor Kouzuki Yuuko, is stationed at. There are many reasons why the base was built on top of the Yokohama Hive; it was to serve as both a research facility and a means of safekeeping the newly-captured Hive Reactor, and the site was also ground zero for the first two G-Bombs to be used in human history; the base itself served as a sort of experiment to see what were the long-term effects on humans living on a G-Bomb site.

Underground schematic of Yokohama Base.

The base is well-equipped, with shuttle launch sites, two large-scale runways, two mass drivers, vast training grounds, and is of close proximity to Tokyo Bay; static defensive emplacements are located around the facilities, and the base's various large access gates can be sealed to prevent entry by enemies, although unsealing them again would take at least half a year. Underground facilities are vast, owing to the fact that the interior of the base was derived from the original interior construction of the Yokohama Hive. A main shaft connects the lowest levels to the topmost floor, and is protected by five barrier gates.

The base's main area is the central gathering area, a wide open space in the interior of the base that is located one level below the base's surface; specifically, where the training field is. it is from this level that access to the other underground facilities of the base is allowed. The Yokohama Base's underground hangars are large enough to allow storage of several XG-70 units.

Located at the deepest level is the Yokohama Hive Reactor, accessible either by the access hatch at the bottom of the main shaft, or the control and monitoring room at Level B33, which will give one a clear view of the Reactor. The Reactor not only serves as the base's primary object of research, but also as an energy source for the base.

Base Personnel

Command Personnel

• Brigadier General Paul Radhabinod
• Professor Kouzuki Yuuko

Base Personnel

• 2^nd Lieutenant Kagami Sumika
• Yashiro Kasumi
• Sergeant Jinguuji Marimo
• Lieutenant Irina Pyatkh
• Master Sergeant Kyouzuka Shizue
• Homura Manami

Infantry Forces

Military Police

MP personnel under the command of the UN 11^th Force. During normal duty they police the interior of the base and prevent unauthorized personnel from entering, and are also deployed as security forces within the base in the event of an external attack.

Mechanized Infantry

Troopers armed with Type-87 Feedback Protector systems modified to hold weapons. They serve a variety of roles, ranging from security to base defence. During the Defence of Yokohama Base, four companies of troopers were lost.

• 101^st Mechanized Infantry Regiment
• 108^th Mechanized Infantry Regiment
• 116^th Mechanized Infantry Regiment

Armor Forces

The 11^th Force uses troops borrowed from both the Empire of Japan and its own UN forces to form the seven main TSF battalions that are housed in Yokohama Base, in addition to several battle tank squads and artillery/MLRS batteries. Most of them were annihilated in the Defence of Yokohama Base.

• 1^st to 7^th Tactical Armored Battalions

Hawk, Dragon, Joker units and Blizzard Squadron used F-15Js, while other units were equipped with F-4Js.

They have been heard using the following callsigns: Hornet, Sword, Cracker, Storm, Axe, Sobat, Hound, Shark, Falcon, Tiger, Victor, Tomahawk, Hermit, Lotus (Flight), Gambler (Flight), Blizzard (Squadron). The following callsigns are those used only by the 7^th Tactical Armored Battalion: Rapier, Grizzly, Circus, Dragon, Joker, Flame, Liger, and Hawk.

• Main Battle Tank forces

The tank forces of the 11^th Force use Leopard 2 MBTs.

• Artillery forces

Apart from MLRS vehicles, the 11^th Force also use Crusaders for their indirect fire needs.

Air Forces

Yokohama Base maintains a few Air Support Groups within its complex, which are tasked with providing combat firepower support in the event of an attack.

• 1^st to 7^th Air Support Groups

Most of the air support groups were scrambled during the Defence of Yokohama Base, and were later diverted to surrounding UN bases; included amongst them are the 105^th Air Support Squad, a helicopter close-air-support squad. Most if not all of them use the AH-64D Apache Longbow as their primary aircraft.

Timeline

• ~1999: Plans for the (re)construction of Yokohama Base are first laid down.

• ~2001: Yokohama Base reaches 70% operational capacity.
• October 22^nd, 2001: Shirogane Takeru arrives at Yokohama Base.
• November 29^th, 2001: The TSF_Components#XM3 TSF operating system, making use of new operating concepts, developed by Kouzuki Yuuko with the aid of Takeru, begins demonstration tests at Yokohama Base in absolute secrecy.
• December 5^th to 6^th: Yokohama Base deploys the 207^th Tactical Armored Platoon during the 12/5 Incident.
• December 10^th: The XM3 Trials begin to test the XM3 OS for mass-production, and is followed by the Yokohama Base Incident.
• December 10^th to 17^th, 2001: The 00 Unit is completed.
• December 29^th to 30^th, 2001: The Defence of Yokohama Base; surviving BETA forces from Operation 21^st attack the base. The results of this almost causes the destruction of Yokohama base along with the 00 Unit and incomplete XG-70b and XG-70d. This is narrowly averted at the cost of over 10,000 killed, wounded, or MIA personnel and the effective annihilation of all military forces stationed there.