text: Chapter 1
  Transition Program for the continued care, convalescence, and rehabilitative treatment
  of our returning wounded Warriors.
  ● Provides information on the importance of medical intelligence for the
  identification of health hazards affecting deployed forces and the medical aspects of
  intelligence preparation of the battlefield (IPB).
  Chapter 1
  Army Health System Overview
  The AHS is a component of the Department of Defense (DOD) MHS. Although the
  MHS is an interrelated system which may share medical services, capabilities, and
  specialties among the United States (U.S.) Service components, it is not a joint
  command and control system. Each Service component develops its medical resources
  to support its Service-specific mission. This results in the development of different
  types of organizations with varying levels of capability, mobility, and survivability.
  Although joint medical resources may have similar nomenclature to describe the unit,
  they are not usually interchangeable. For information on joint health services refer to
  JP 4-02.
  SECTION I — OPERATIONAL ENVIRONMENT
  1-1. The Army accomplishes its mission by supporting the joint force in four strategic roles: shape
  operational environments, prevent conflict, conduct large-scale ground combat operations, and consolidate
  gains. The benchmark for Army readiness is its ability to conduct large-scale combat operations (LSCO)
  fighting a near peer/peer threat with potential overmatch across multiple domains (including land, air,
  maritime, space, cyberspace as well as electromagnetic spectrum and information environment).
  1-2. A multi-domain approach to operations is not new. Army forces have effectively integrated
  capabilities and synchronized actions in the air, land, and maritime domains for decades. Rapid and
  continued advances in technology and the military application of new technologies to the space domain, the
  electromagnetic spectrum, and the information environment (particularly cyberspace) require special
  consideration in planning and converging effects from across all domains. Refer to FM 3-0 for more
  information.
  THREATS
  1-3. An operational environment (OE) has a number of threats that consist of enemies, adversaries, neutrals,
  and hybrid threats (force that combines traditional, irregular, disruptive, or catastrophic capabilities). These
  threats are protracted confrontation among individuals, groups of individuals, paramilitary or military forces,
  state actors, and nonstate actors increasingly willing to use violence to achieve their political and ideological
  ends. There is a probability that in the future, United States Army forces will conduct operations in an urban
  environment and in and around megacities. Urban areas are becoming safe havens and support bases for
  terrorists, insurgents, or criminal organizations. For information on the OE see FM 3-0.
  1-4. Commanders and staffs analyze an OE using the eight operational variables: political, military,
  economic, social, information, infrastructure, physical environment, and time (See FM 6-0 for more
  information on the operational variables).