"Yeah, they were. At the beginning, they were one of the largest mobile suits to exist. Then OZ started trying to copy them... mostly ground, but they all had thrusters. My Gundam Sandrock and Trowa's Gundam Heavyarms were mostly used on the ground. Shenlong and Deathscythe used their thrusters more often than we did. Heero's Wing Gundam could transform into an aircraft so it was definitely both.

Eventually, they were all modified to go into space."