The Operation Sudden Fire tactical campaign pack is a full tactical campaign for use with the Heavy Gear tactical system. The booklet features two brand new units, the 13th Northern Gear Regiment, Charlie Company (Death Knells) and the remnants of the MILICIA's 127th Regiment (Carrion Serpents), and a bundle of scenarios that can be played independently or as part of the campaign. The pack also includes two maps and three counter sheets.