The brunette beauty, who is currently dating rapper Kanye West, attended the event in Greenville, North Carolina with Sgt. Martin Gardner.
Sgt. Gardner, who was on the ball's planning committee, extended his invitation to the star months ago, and she rearranged her schedule in order to attend, according to E! Online.
Kardashian shared her thanks on her Twitter.com page, writing, ""Just left the Marine Corps Ball. Thanks to all of the marines I had the opportunity to meet tonight ! Thank you for all that you do!""
Kardashian is not the first celebrity to attend a Marine Corps Ball - Mila Kunis and Justin Timberlake were guests at similar events last year (11).