US soldiers proceed into Mexico during Mexican Punitive Expedition in 1916/1917

The video discusses the logistical challenges faced in transporting supplies over long distances using mules. It highlights the confrontations with the Mexican Federal Army, resulting in the loss of 17 men. Security measures, including house-to-house searches and identity checks, were implemented to prevent enemy infiltration.

What happened after losing 17 men in battle?

What was the significance of checking everyone's identity?