The Global republic troops were formed after the fall of Johnson's ruthless company in 2035. Most of the troops were originally from the rebal army. Scaz became a well respected member of the Global republic troops.
Many of these troops went into battle to fight against Claw and Dark Origin in 2040, led by Scaz and Captain Max, the troops engage with Dark Origin forces, they manage to kill several enemy troops but many Global republic troops died when the G.K.D. (Global Killer Device) bomb was launched, the surviving Global republic troops and other survivor's built an Underground city to survive.
During the experiment attack on the city, a majority of the surviving troops we're killed by the experiments while trying to defend the city, but some troopers including Captain Max and Kate and probably other's managed to survive the attack.