The absence of a pronounced arch in the foot, a condition often referred to as pes planus, historically presented concerns for military readiness. This physical characteristic was viewed as potentially detrimental to a soldier’s ability to endure the rigors of training and combat, specifically prolonged marching, running, and standing, all essential components of military service.
The perceived issues stemmed from the belief that individuals lacking the natural shock absorption provided by an arched foot were more susceptible to developing musculoskeletal problems. These problems could include foot pain, ankle instability, shin splints, knee pain, and even back issues. In a military context, such ailments directly impacted unit effectiveness by reducing individual soldier stamina and increasing the risk of debilitating injuries that would render them unfit for duty. During the period when long marches and sustained physical activity were paramount, maintaining a high degree of physical fitness throughout a unit was essential for mission success.