The 1st Armored Division (第一機甲師団, dai-ichi kikou-shidan), also known as the Heimdallr Garrison (帝都守備隊, teito shubi-tai), is stationed in the capital of Erebonia, Heimdallr.


During the coup d'etat of the Noble Alliance in S.1204, the 1st Armored Division was tasked with the protection of Heimdallr. However, they were no match for the brand-new Panzer Soldats and suffered major losses against them.