Underclassman at the Academy (Army or Naval)

noun

1. A freshman at a military or naval academy

   "He also struggled to march in step and stumbled through … a morning ritual in which plebes are forced to stand at full attention and recite an endless stream of information …"

2. One of the common people plebeian

   "Once a proud and high-minded group, the new class could look up at the rich with a certain contempt and down at the plebes with compassion …"

3. An ordinary person who lacks the knowledge of an insider

   "These guys may look like plebes, but they're veteran hackers."

noun

1. Plebeian