The introduction of AI applications has opened ample opportunities for the global military department to enhance its capabilities for appropriate defence. Multiple potential AI applications in the military have been practised to protect a country from different sides of attacks. The military using artificial intelligence has become a crucial part of 21st-century warfare across the world-- a new paradigm of power. AI applications are deployed in different sectors of the global military department to advance the process of the military using artificial intelligence efficiently and effectively. Let's explore some of the top AI applications being used in the global military department in the 21st century.