Related Clues:

• The 'N' of U.S.N.A.
• Like some forces
• Kind of engagement
• Like some exercises
• Like engagements at sea
• 'Semper fidelis' person
• Leatherneck
• Not terrestrial, perhaps
• Devil dog
• Like some WWII battles
• Fleet-related
• Kind of geology
• Marine
• Annapolis Academy
• Soldier in Uris's 'Battle Cry'