Operation: MAD HATTER

Operation: MAD HATTER was an operation of the United Nations Space Command sometime between 2556 and October 2558. The operation involved a countermobility strike on the Jiralhanae-controlled forgeship Boundless Artifice. Spartan Jameson Locke participated in this operation.

List of appearances

 * Halo 5: Guardians
 * Limited Edition dossiers