Operation Market Garden, the largest airborne operation in history, relied heavily on communication between ground forces and air support. When these connections failed, the consequences were severe. Many accounts have attributed these issues to the performance of the US Air Support Signals Teams, claiming they were underprepared and unfamiliar with their equipment. This book takes a closer look at these claims, questioning the widespread belief that the failures were due to inadequate training and instead exploring how limited time for coordination, unfamiliar equipment, and last-minute planning may have impacted the teams’ effectiveness.This book explores the role of the US Air Support Signals Teams in the Battle of Arnhem–Oosterbeek in September 1944 and aims to offer readers a clearer understanding of their role in the battle. It will appeal to those interested in exploring the complexities behind one of World War II’s pivotal operations.