Written by the band's lead vocalist Will Gould, guitarist Ian Miles, frequent collaborator Neil Kennedy, and producer Tom Dalgety, it was released on 4 November 2022 as a standalone single.

[5] NME reporter Ellie Robinson hailed "Ghost Brigade" as "energised" and "biting", comparing it to "The Black Parade-era My Chemical Romance" and praising the track's "boisterous and crunchy guitars, soaring vocal melodies and a theatrical, xylophone-accented bridge".

[3] Writing for Rock Sound online, Jack Rogers claimed that the song "feels like it harks back to the very beginning of the band" as "a fantastical and furious piece of punk-rock fury".

Describing the track as "fan-fucking-tastic", he also highlighted its "Circle-pit inciting pace, gorgeous drama that turns your blood to ice and the sort of old-school melodies that are made to be screamed at the top of your lungs".

[1] Ashley Perez Hollingsworth of Genre Is Dead also likened "Ghost Brigade" to Creeper's older material, claiming that it "feels like the band returning to their punk rock roots".