Red and blue opposition design diagram

Quick answer：

A red and blue opposition design diagram typically refers to a visual layout or plan that depicts a strategic arrangement or competition between two opposing forces, often used in the context of military tactics, sports, or games. In military or strategic planning, such diagrams can illustrate deployment of troops, strategic objectives, and the flow of operations. In sports, they might represent a game plan for a team's defense or offense. In gaming, it can be a map design for a competitive scenario.