A defensive structure or strategy designed to protect against invasion or attack.

सुरक्षा रणनीति

English Usage: The fortification strategy implemented by the general successfully defended the city against enemy attacks.

Hindi Usage: जनरल द्वारा लागू की गई सुरक्षा रणनीति ने शहर को दुश्मन के हमलों से सफलतापूर्वक बचा लिया।