Decrees from the Son of Heaven do not penetrate the walls of a camp
“Decrees from the Son of Heaven do not penetrate the walls of a camp.”
“The Art of War by Active 6th Century B.C. Sunzi.” Gutenberg.Org, https://www.gutenberg.org/ebooks/132. Accessed 16 July 2021, loc. 114.
Always a danger in loosing an army in order to press policy that runs counter to the purpose or goals of the army itself. Always a danger when fighting a war only for political ends rather than humanitarian purposes.