This United States Army manual, Army Techniques Publication ATP 4-02.5 Casualty Care Change 1 August 2020, is a consolidation of currently existing publications which address the treatment aspect of the Army Health Systems (AHS). The publications being consolidated in this ATP publication include: Field Manual (FM) 4-02.10, 3 January 2005; FM 4-02.19, 31 July 2009; FM 4-02.25, 28 March 2003; FM 4-02.51, 6 July 2006; and FM 4-02.56, 6 July 2006. This publication is intended for use by commanders their staffs, command surgeons, AHS planners, and Army Medical Department personnel and units. Note that ATP 4-02.5 no longer includes Chapters 1, 2, 3, or 5, or Appendices A or B. Those have been superseded by ATP 4-02.10. Their omission from this version of ATP 4-02.5 is not an error nor a defect. This publication addresses the casualty care aspects of the health service support mission under the sustainment warfighting function. It describes the various organizational designs for the units providing this support and doctrinal guidance on the employment of these organizations and their functional capabilities. The staffing and organizational structures and positions presented in this manual are established in table's organization and equipment (TOEs). This publication implements or is in consonance with North Atlantic Treaty Organization (NATO) International Standardization Agreements (STANAGs) and American, British, Canadian, Australian and New Zealand (ABCA) standards and publications.