The Internet of Battlefield Things (IoBT) is revolutionizing military operations by integrating interconnected devices and autonomous systems into combat environments, significantly enhancing decision-making, communication, and battlefield efficiency. However, this reliance on IoBT introduces substantial cybersecurity risks, exposing military networks to sophisticated cyber threats such as hacking, malware, and Distributed Denial of Service (DDoS) attacks. This paper explores the interplay between IoBT and the cyber domain, identifying the key challenges, vulnerabilities, and solutions necessary to secure these interconnected systems in the context of modern warfare. The study reviews the architectural components of IoBT, including sensors, drones, and communication networks, and examines their potential weaknesses in the face of cyberattacks. Additionally, it discusses common attack vectors such as Man-in-the-Middle (MitM) and zero-day exploits, which pose significant risks to military systems. To counter these threats, the paper evaluates various cybersecurity strategies, including the application of artificial intelligence (AI), machine learning (ML), blockchain technology, and robust encryption protocols designed to enhance the resilience and security of IoBT networks. Case studies of real-world IoBT deployments and cyber breaches further illustrate the practical implications of these challenges and defense mechanisms.