412th Engineer Command

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412th Engineer Command


Unified Earth Government





The 412th Engineer Command[Note 1] is an engineering unit of the UNSC Army Corps of Engineers established sometime before 2556.[1] The command conducts civil and combat engineering roles in support of United Nations Space Command operations in the conflicts following the end of the Human-Covenant War.[1] Holly Tanaka served with the 412th as a sergeant in 2556 before transferring to Spartan Operations.[1][2]


The 412th Engineer Command exists in the modern day United States Army as a theatre-level reserve component. It's likely that the 412th Engineer Command in United Nations Space Command service carries over the original American unit's name and lineage as with many other units.

List of appearances[edit]


  1. ^ The unit was named as the 414th Engineer Command in Halo: Escalation issue 18 for Holly Tanaka's current assignment. This is in contradiction of a mention in the previous issue of her being in the 412th. It is presumed to be an error, since Halo 5: Guardians once again mentions the "412th Engineering Command" in Tanaka's biography.