What defense did the trenches have?

Trenches during World War I were designed for protection against enemy fire and artillery. They featured deep, reinforced walls, often lined with sandbags and wooden supports to absorb impact and prevent collapse. Additionally, the zigzag design of trenches helped minimize the effects of shell blasts and provided cover for soldiers while reducing the risk of being targeted by snipers. Barbed wire was commonly placed in front of trenches to hinder enemy advances and provide an additional layer of defense.