"Blue on Blue" is a term often used to describe a situation where individuals or groups within the same category or affiliation conflict with each other. This phrase is commonly associated with military contexts, particularly when friendly forces mistakenly engage one another. It highlights the complexities and dangers of combat scenarios where identification errors can lead to tragic outcomes. In a broader sense, "Blue on Blue" can also refer to internal disputes within organizations, communities, or political parties. Such conflicts can arise from differing opinions, strategies, or leadership styles, leading to division and weakening the overall effectiveness of the group.