Book excerpt: Women's participation in the U.S. Armed Forces has grown over time in response to the national need for their services. Throughout each era of American history, patriotic women volunteered to serve their country in a wide variety of official and unofficially sanctioned capacities. When there was a call to duty, the United States Armed Forces always relied upon women to be a part of the effort. This book provides information to enable students and scholars to understand the effect women have had on wars that have shaped the United States.