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Field Manual Vault: free, searchable, downloadable military manuals

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30 publications for “CAS”
FM 3-99 C1 ·Army ·2015

Airborne and Air Assault Operations

Assured access is the desired conditions that the United States seeks to maintain in potential areas of strategic importance throughout the world. Assured access is the result of a combination of geopolitical factors that affect the United… Current 232 pages Small Unit Tactics
FM 3-52 ·Army ·2016

Airspace Control

FM 3-52 Airspace Control, updates the previous 8 February 2013 version of FM 3-52 to reflect lessons learned through recent operational experience and to adapt to the joint airspace community's release of updates to JP 352, and ATP 3-52.1… Current 110 pages Aviation
FM 3-04 ·Army ·2025

Army Aviation

Army Aviation is the division's and corps' most maneuverable force. Army Aviation forces are uniquely capable of rapidly and simultaneously impacting the deep, close, and rear operations of multiple echelons. Army Aviation forces provide… Current 164 pages Aviation
FM 3-96 ·Army ·2021

Brigade Combat Team

The Army provides readily available, trained and equipped, and globally responsive forces to shape the operational environment, prevent conflict, and prevail in large-scale ground combat while consolidating gains as part of unified action.… Current 460 pages Small Unit Tactics
FM 1-02.1 ·Army ·2026

Operational Terms

30 May 2026 FM 1-02.1 v This third edition of FM 1-02.1 compiles all Army terms and definitions approved for use in Army doctrinal publications, including ADPs, FMs, and ATPs. It also includes joint and North Atlantic Treaty Organization… Current 150 pages Doctrine Philosophy
FM 6-99 ·Army ·2021

U.S. Army Report and Message Formats

While U.S. forces are among the most technologically advanced forces in the world, the need for redundancy and interoperability between joint and multinational forces requires the continued use of analog communication systems. Other… Current 236 pages Fires
FM 3-98 ·Army ·2023

Reconnaissance and Security Operations

FM 3-98 provides the commander and staff of Cavalry formations with doctrine relevant to Army and joint operations. This publication explains how effective reconnaissance and security operations generate depth, allow commanders reaction… Current 204 pages Recon Intel
FM 3-90 ·Army ·2023

Tactics

Tactics are the employment, ordered arrangement, and directed actions of forces in relation to each other. Leaders select tactics that accomplish their assigned mission. Successful tactics require generating and applying combat power. This… Current 480 pages Small Unit Tactics
FM 2-0 ·Army ·2023

Intelligence

Intelligence drives multidomain operations and multidomain operations enable intelligence. FM 2-0 focuses on the role of intelligence during operations by Army forces and is closely nested with the operational doctrine in FM 3-0,… Current 328 pages Recon Intel
FM 3-09 ·Army ·2024

Fire Support and Field Artillery Operations

This version of FM 3-09 codifies the multidomain approach to fire support and field artillery operations in terms of the combined arms employment of capabilities from multiple domains. A domain is a physically defined portion of an… Current 284 pages Fires
FM 3-81 ·Army ·2021

Maneuver Enhancement Brigade

FM 3-81 provides doctrine for the tactical employment of the MEB in support of Army operations. The manual provides the MEB with a unity of effort and a common philosophy, language, and purpose. As one of the multifunctional brigades of… Current 188 pages Small Unit Tactics
FM 3-0 ·Army ·2025

Operations

This version of FM 3-0 is an update to the edition published in October 2022. The manual retains the focus on large-scale combat operations and reinforces the point: all operations are multidomain operations. Since 2022, the Army learned… Current 296 pages Doctrine Philosophy
FM 6-0 ·Army ·2022

Commander and Staff Organization and Operations

Command and control (C2)—the exercise of authority and direction by a properly designated commander over assigned and attached forces—is fundamental to the art and science of warfare. No single specialized military function, either by… Current 224 pages Leadership Training
FM 3-94 ·Army ·2021

Armies, Corps, and Division Operations

The Army gives the combatant commander depth and versatility because landpower expands the friendly range of military options. The Army, uniquely, provides a combination of armored, medium, light, and airborne forces. Along with a full… Current 212 pages Doctrine Philosophy
FM 3-55 ·Army ·2013

Information Collection

The Army currently has no unified methodology or overall plan to define or establish how it performs or supports information collection activities at all echelons. This publication clarifies how the Army plans, prepares, and executes… Current 86 pages Recon Intel
FM 3-01.44 ·Army ·2022

Short-Range Air Defense Operations

The current strategic environment–with revanchist Russia and revisionist China–is typified by continuous competition among great powers which challenges the security environment and operational deterrence. Subsequently, today's operational… Current 104 pages Fires
FM 3-84 ·Army ·2023

Legal Support to Operations

This manual establishes a foundation for the Judge Advocate General's (JAG's) Corps and judge advocate legal services (JALS) personnel to provide principled counsel and mission-focused legal support to the operational Army. It establishes… Current 100 pages CBRN
FM 3-05 ·Army ·2025

Army Special Operations

As one of the Army's five core competencies, special operations are activities or actions requiring distinct modes of employment, tactical techniques, equipment, and training, often conducted in hostile, denied, or politically or… Current 102 pages Small Unit Tactics
FM 3-24 C2 ·Army ·2014

Insurgencies and Countering Insurgencies {mcwp 3-33.5}

The 2006 version of FM 3-24/ MCWP 3-33.5, Counterinsurgency, filled an important doctrinal gap at a time when U.S. forces were engaged in counterinsurgency operations. This version of FM 3-24/MCWP 3-33.5 builds on that important manual.… Current 202 pages Doctrine Philosophy
FM 3-11 ·Army ·2025

Chemical, Biological, Radiological, and Nuclear Operations

As the United States Army operates in potential chemical, biological, radiological, or nuclear (CBRN) environments in the 21st century, we must account for new and emerging CBRN threats. Many peer, near-peer, and even sub-peer adversaries… Current 128 pages CBRN
FM 3-12 ·Army ·2025

Cyberspace and Electromagnetic Warfare Operations

FM 3-12 provides Army doctrine for cyberspace operations, electromagnetic warfare, and cyberspace electromagnetic activities as part of a combined arms approach to achieve objectives across the competition continuum. FM 3-12 provides… Current 238 pages Comms Signal
FM 1 ·Army ·2025

The Army: A Primer to Our Profession of Arms

This book is written for our Army. It explains our profession, our purpose, and what it means to be an American Soldier. You will notice this book is not written like other military doctrine; it touches on values and concepts through… Current 104 pages Aviation
FM 5-0 ·Army ·2024

Planning and Orders Production

Planning—the art and science of understanding a situation, envisioning a desired future, and determining effective ways of bringing that future about—is a key activity of the operations process. While planning may start an iteration of the… Current 412 pages Doctrine Philosophy
FM 3-01 ·Army ·2025

U.S. Army Air and Missile Defense Operations

Department of Defense Directive 5100.01 charges the Army to "conduct air and missile defense to support joint campaigns and assist in achieving air superiority." FM 3-01 describes the contributions of ADA, the Army's dedicated AMD… Current 218 pages Fires
FM 1-02.2 C1 ·Army ·2025

Military Symbols

This publication compiles Department of Defense Military Standard (MIL-STD) 2525E approved military symbols applicable to land operations for use in U.S. Army doctrinal publications, situation maps, overlays, and annotated aerial… Current 296 pages Doctrine Philosophy
FM 3-16 ·Army ·2024

The Army in Multinational Operations

Whenever commonality of interests exists, nations enter political, economic, or military partnerships, or combinations thereof. These partnerships occur in regional and worldwide patterns as nations seek opportunities to promote their… Current 148 pages Doctrine Philosophy
FM 6-02 ·Army ·2019

Signal Support to Operations

Command and control is fundamental to joint and Army operations. Command and control is the exercise of authority and direction by a properly designated commander over assigned and attached forces in the accomplishment of a mission (JP 1).… Current 184 pages Comms Signal
FM 4-0 ·Army ·2026

Sustainment Operations

Advances in civilian and military technology have changed the character of warfare and the conduct of Army and joint force operations. The dilemmas posed by the integration of new technologies into the future battlefield have changed the… Current 256 pages Sustainment
FM 3-14 ·Army ·2026

Army Space Operations

Over the last three decades, assumptions of individual domain supremacy and the break in great-power security competition drove the U.S. joint force doctrine, equipment, and readiness posture. These assumptions have evolved when faced with… Current 96 pages Other
FM 3-39 ·Army ·2025

Military Police Operations

This version of FM 3-39 aligns with FM 3-0 and describes how military police units are manned, equipped, and trained to enable the Army's ability to conduct prompt and sustained land combat to defeat enemy ground forces and seize, occupy,… Current 208 pages Small Unit Tactics