Final answer:
Arthropods, especially within the Arachnida class like spiders and scorpions, have been used in history for warfare, often as a biowarfare tactic to instill fear or cause direct harm to enemies.
Step-by-step explanation:
Arthropods have been utilized in warfare throughout history, notably in ancient and medieval times. The class most commonly associated with such uses is the Arachnida, which includes species such as spiders, scorpions, and mites. These creatures, owing to their potentially harmful bites or stings, defensive mechanisms, or fear-inducing presence, have been leveraged to protect or attack during battles.
While it might seem out of the ordinary, the use of living creatures in war aligns with historical practices of biowarfare, where animals have been employed as tactical elements. Arachnids, with their varied abilities and characteristics such as the exoskeleton and jointed appendages, presenting both offensive and defensive strategies, provide a toolkit exploitable in historical combat scenarios.