Write an Executive Summary (EXSUM). And analyze the case study OPERATION OVERLORD AND THE PRINCIPLES OF WAR with a directed focus using one component from the NCO Core Competencies Communication. You will then summarize the case study staying relevant to the directed question WHAT PERCEPTIONS ARE PROCURED FROM THE OPERATION OVERLORD AND THE PRINCIPLES OF WAR WHEN USING THE NCO COMMON CORE COMPENTENCY OF COMMUNICATION? The EXSUM will focus on the historical case study, but will be supported by other research conducted to support your findings. Cite at least three references. Use TR-1-11 for formatting guidance as well as the case study