Leathernecks' outfit: Abbr.

• Mil. branch
• Lance cpl.'s org.
• Lance cpl.'s grp.
• Sch. north of Gulfport
• Branch of the mil
• Lance cpl.'s org
• Gyrene initials
• Sch. near Gulfport
• Service branch: Abbr

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USM may stand for: