The term used for positions that provide enhanced defensive capability is?

The term that refers to positions providing enhanced defensive capability is "Reinforced." Reinforced positions are specifically designed to improve defense by using additional materials, structures, or strategic advantages that allow a unit to better withstand attacks. This can include utilizing obstacles, fortifying existing structures, and implementing strategic planning to enhance visibility and kill zones.

The other terms, while relevant in different contexts, do not convey the specific idea of enhanced defensive capability as clearly. "Supplementary" generally refers to support positions that might add to the overall strategy but do not inherently imply reinforcement. "Secured" implies safety but lacks the specificity regarding defense enhancements. "Static" denotes fixed positions but does not necessarily indicate they have been reinforced or improved for better resilience against threats.