Why does William Green receive less recognition than Vauban?
Short answerVauban's extensive writings and the fame of geometrically elaborate French forts gave him a larger reputation, while Green's adaptive works were scattered across North America, Britain, and Gibraltar.
NotesThe answer points first to reputation: Vauban wrote more and became the engineer French writers repeatedly discussed. His mathematically elaborate star forts also make a visually coherent school that is easy to recognize. Green worked across North America, Britain, and Gibraltar and adapted designs to the ground rather than forcing every site into one geometry. Practical resilience can be historically less visible than a famous published system, even when the works perform well under siege.