G-1 Base

The G-1 Base (G-1ベース, Ji-Wan Beesu) is a Britannian land-cruiser commonly employed by the known members of the Imperial Family as a mobile command center and a field hospital. Since these mobile bases are almost always carrying someone important, they are always surrounded by motorcades of police, medical vehicles, and escorted by the regular military in the form of tanks, armored vehicles, and Knightmares.

G-1 Base also carries Knightmares inside. It can carry 10 Knightmare frames and launch it in its two side catapult (specially build for launching Knightmare frames). G-1 based were first scened in Code Geass Season 1 ep. 1.