APP-6A/MIL-STD-2525A-B unframed symbol for Ground Track - Unit - Combat - Engineer - Combat - Mechanised (Tracked). Codes: 1.X.3.1.1.6.1.7 (2525A, 2525B), WAR.GRDTRK.UNT.CBT.ENG.CBT.MECH (2525B Ch1)
APP-6A, MIL-STD-2525B Change 1
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