On an overweight soldier, it is the gap between the uniform and the waist. This gap is caused by being overweight, with a large belly. Generaly the overweight soldier's uniform top will stick out away from his or her body thus creating the negative space.
hey soldier you'd better check that negative space

holy shit.... check out the negative space on that douche
by d mo gun June 22, 2011
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'This is a band with a deep sense of melody as well as a deep sense of songwriting. Throw some balls in for good measure and you get Negative Space.'

Chris Henderson
guitarist for 3 Doors Down
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Negative Space Rocks!
by ~Storylines~ August 26, 2008
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