Developed by the Earth Federation Forces in the latter half of the One Year War, the Gundam Ground Type continues to be deployed after the war. An example is the Gundam Ground Type S, which is named as such as it is a Gundam Ground Type deployed exclusively on the Spartan. The suit is a remodeled, ground use version of the RGM-79/GH Gundam Head which was used in the battle of A Baoa Qu. Its Gundam-like head is meant to replicate the psychological impact that the famous Gundam had on the Zeon forces.
Although the head has no V-shaped antenna, its sensing performance is improved due to the addition of sensors. To adapt to ground use, the shoulder thrusters are removed, a new backpack was installed and changes are made to the chest and feet. The new backpack is smaller, with three thrusters on each side for improved mobility, and also has a pair of sub-arms for holding weapons, such as shields. Armaments used by the suit include a beam rifle, a pair of beam sabers that double as beam javelins, and a shield.