CSIS's Mark Cancian annually produces a series of white papers on U.S. military forces, including their composition, new initiatives, long-term trends, and challenges. This report is a compilation of these papers. It takes a deep look at each military service, as well as special operations forces, DOD civilians, and contractors in the FY 2022 budget. The report also discusses the debate about legacy equipment, the interaction of the budget and force size, and the decline in force size that the services face with retiring older systems without adequate replacements.

CSIS senior adviser Mark Cancian annually produces a series of white papers on U.S. military forces, including their composition, new initiatives, long-term trends, and challenges. This report is a compilation of these papers and takes a deep look at each of the military services, the new Space Force, special operations forces, DOD civilians, and contractors in the FY 2021 budget. This report further includes a foreword regarding how the Biden administration might approach decisions facing the military forces, drawing on insights from the individual chapters.

The Department of Defense (DOD) faces a strategic choice: whether to focus on modernization for high-tech conflicts with China and Russia or expand forces and improve readiness to meet a superpower’s commitments for ongoing conflicts and crisis response. In their FY 2018 budgets, the services all complain that they are too small for the demands being put on them and hedge toward expanding forces and readiness. In the new DOD strategy being developed for 2019 and beyond, the services hope to pursue all three goals—expand forces, improve readiness, and increase modernization—but the fiscal future is highly uncertain, and they will likely have to make difficult trade-offs.

Annually, CSIS senior adviser Mark Cancian publishes a series of papers on U.S. military forces—their composition, new initiatives, long-term trends, and challenges. The overall theme of this year’s report is the struggle to align forces and strategy because of budget tradeoffs that even defense buildups must make, unrelenting operational demands that stress forces and prevent force structure reductions, and legacy programs whose smooth operations and strong constituencies inhibit rapid change. This report takes a deeper look at the strategic and budget context, the military services, special operations forces, DOD civilians and contractors, and non-DOD national security organizations in the FY 2020 budget.

The Trump administration’s FY 2019 budget proposal laid out a set of priorities. To pay for these initiatives, the FY 2019 defense budget rose 14 percent above the FY 2017 level. The Congress generally endorsed the administration's approach. However, the choices showed that there is no escaping the tradeoff among readiness, modernization, and force structure. This study examines the changes in the FY 2019 budget for each of the military services, DOD civilians, and contractors, how the budget shapes the forces, and the challenges ahead for building and maintaining the forces needed to implement the administration's stated strategy.

As Sino-US relations have deteriorated, concerns have grown in Washington over its ability to defeat China in a major conflict. A conflict between such peer competitors would likely become a protracted war of attrition drawing on all dimensions of national power, but this reality has yet to receive a sufficient degree of analytical attention. In this Adelphi book, Iskander Rehman provides a historically informed and empirically grounded study of protracted great-power war, its core drivers and characteristics, and an examination of the elements that have most often determined a competitor’s long-term strategic performance. Final victory in a protracted conflict, this book argues, rests on a combination of three core factors: a state’s military effectiveness and adaptability, its socio-economic power and resiliency, and the soundness of its alliance management and grand strategy. A detailed analysis of the contemporary Sino-US rivalry assesses how both parties might fare in the event of a protracted war, while highlighting some of its key differentiating aspects – most notably its nuclear and cyber dimensions.

Since 1957, U.S. space policy has grappled with the question: should the space domain be governed by developing international law, or openly weaponized for national security? Has the creation of the Space Force settled this tension once and for all?

This book examines the extensive influence of the All-Volunteer Force (AVF) on the past, present, and future of America, demonstrating how the AVF encompasses the most significant issues of military history and defense policy. Throughout the vast majority of its wars during the twentieth century, the United States relied on a mixture of volunteers who chose to serve and conscripts provided through the Selective Service System, known colloquially as the draft. When the United States emerged as a world superpower in the aftermath of World War II, U.S. policymakers also depended on the draft during peacetime. Drawing on primary source documents, this book guides readers through the transition from the draft to the AVF and analyzes its history, results, challenges, and implications. Each chapter provides an overview of the issues of the time, recounts the ensuing debates and developments around them, and examines how they manifested themselves relative to the advent of the AVF and American society during times of peace and war. Combining narrative with documents, The Advent of the All-Volunteer Force is a valuable resource for students, scholars, policymakers, and general readers interested in modern American history, military history, and the dynamic linkages between policy, politics, and American society.

Defense Acquisition Trends 2021 is the latest in an annual series of CSIS reports examining trends in what the DoD is buying, how the DoD is buying it, and from whom the DoD is buying using data from the Federal Procurement Data System (FPDS). This report analyzes the current state of affairs in defense acquisition by combining detailed policy and data analysis to provide a comprehensive overview of the current and future outlook for defense acquisition. It provides critical insights into understanding the current trends in the defense-industrial base and the implications of those trends on acquisition policy.

Analysis of the FY 2022 Defense Budget from the CSIS Defense Budget Analysis program provides an in-depth assessment of the Biden administration’s request for national defense funding in FY 2022. It outlines priorities for the ongoing and completed strategic reviews—including the National Defense Strategy, Nuclear Posture Review, Missile Defense Review, and Global Posture Review—and their potential budgetary effects. The report concludes by assessing current congressional action on defense appropriations for FY 2022 and identifying key issues for the FY 2023 budget request.