Marines have been nicknamed based on their appearance, fighting spirit and events throughout history. These nicknames include leatherneck, devil dog and jarhead, a prominent feature depicting a short haircut. Their demeanor, pride and uniformity has given rise to the history and lore Marines are known for. - Marines have been nicknamed based on their appearance, fighting spirit and events throughout history. These nicknames include leatherneck, devil dog and jarhead, a prominent feature depicting a short haircut. Their demeanor, pride and uniformity has given rise to the history and lore Marines are known for.