Building on decades of prescient investments into broad capabilities and a product-oriented research infrastructure, the U.S. Army and WRAIR have been able to consistently maintain a posture of readiness and response to the most pressing pathogens that threaten U.S. and allied forces. In recent years, however, as the onslaught of emerging infectious diseases (EID), and the public health emergencies they precipitate, has intensified (Zika, Ebola, and pandemic influenza), WRAIR had to turn legacy assets to the task of responding to each outbreak. In 2018, WRAIR announced the creation of a new Emerging Infectious Diseases branch (EIDB), with the explicit mission to survey, anticipate and counter the mounting threat of emerging infectious diseases of key importance to U.S. forces in the homeland and abroad.