Defence, in the context of military operations, refers to the strategic safeguarding against attack, encompassing both tactical positioning and the broader principles of security. This theme has been examined by numerous authors, from Sun Tzu, who emphasized the art of making the enemy uncertain about where to strike, to Carl von Clausewitz, who framed defence as an interplay of cunning and audacity alongside attack.
Writers like Shakespeare highlighted its moral dimensions, as in King Henry V, where defence is weighed against the perceived might of adversaries. Similarly, military treatises stress its practicality, such as E. Kirkpatrick’s focus on learning protection through the lessons of combat. These varied perspectives underscore how protection is both a technical necessity and a reflection of human resolve, balancing strategy with ethical responsibility.