This is part of the the plot of a manga comic named Pumpkin Scissors, explaining how the name came about. This might make sense in Japanese, but I doubt it. From Wikipedia.
To aid the people of the Empire in the war relief effort, the Imperial Army State Section III, also known as the Pumpkin Scissors unit, is established. The name for the group was an idea from one of its officers, the 2nd Lieutenant Alice L. Malvin. According to her, in their war relief effort, they must "face the threat of corrupt people who protect themselves behind lies, power, and money like the rind of a pumpkin", and Section III must act like a pair of scissors cutting through those layers and delivering justice for the people.