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Acronym Finder has 2 verified definitions for HAFE
VBT-1 (-1A1,-1A2) Centaur Veritech Battle Tank; Hypervelocity Airburst Flechette Explosive (HAFE) 3D6 MDC: 30 m: 4.0 km / 12 km +1 to strike, crits on 19,20...