Which of the following is NOT a type of reinforcing obstacle?

Reinforcing obstacles are measures used to protect forces and hinder enemy movement, and they typically consist of physical constructs that can impede or channel an adversary's advance. Each of the listed types of reinforcing obstacles serves a purpose in fortifying a position against threats.

Logistical barriers are distinct from the other options, as they do not directly involve physical structures or obstacles designed for immediate combat scenarios. Instead, logistical barriers pertain to the challenges in supplying forces, managing resources, and maintaining operational effectiveness due to factors like terrain, conflicting priorities, or supply line interruptions. Unlike constructed obstacles, demolitions, and mines/minefields — which are all designed to physically obstruct or damage enemy forces — logistical barriers are more about the indirect effects on operational capability rather than direct physical impediments to movement or action on the battlefield.

Thus, identifying logistical barriers as not fitting the category of reinforcing obstacles highlights the focus on physical impediments versus broader operational challenges.