The 74th (Antrim Artillery) Engineer Regiment was formed in 1967 in the dramatic reduction and reorganisation of the Territorial Army.

It originally was created by the merger of two existing units: 146 (Antrim Artillery) Corps Engineer Regiment, Royal Engineers and 591 (Antrim) Independent Field Squadron.

The regiment was assigned to the 8th Engineer Brigade the majority of its history from 1967 - 1992.

[1] Today the regiment has its traditions carried on by 591 (Antrim Artillery) Field Squadron which is still headquartered at Bangor.

The structure just before the disbandment is:[1][7] At some time the regiment also controlled the following units:[7]