The Internet of Battlefield Things (IoBTs) operate in an adversarial rapidly-evolving environment, necessitating fast, robust and resilient decision-making. The success of machine learning, in particular deep learning methods, can improve the performance and effectiveness of IoBTs, but these models are known to be brittle, untrustworthy, and vulnerable. In this chapter, we discuss the principles and methodologies to make machine learning models robust, resilient to adversarial attacks, and more interpretable for h…