Army Techniques Publication ATP 3-34.40 MCWP 3-17.7 General Engineering provides doctrine for the conduct of GE support by the U.S. Army and U.S. Marine Corps. It emphasizes the GE unity of effort by providing a common philosophy, language, and purpose. GE is a joint function and a U.S. Army discipline. This manual discusses how GE enables commanders to achieve their objectives in supporting joint and U.S. Army operations. This publication also introduces subordinate doctrine. This publication describes how engineer commanders, staffs, and subordinate leaders conduct GE to support Army and Marine forces within the framework of joint operations. Additional considerations for engineer operations in coalition operations are reviewed in Allied Joint Publication 3-12 Allied Joint Doctrine for Joint Engineering and Allied Tactical Publication -52 Edition B, Land Force Combat Engineer Doctrine. Chapter 1 discusses GE as a joint and U.S. Marine Corps engineer function and a U.S. Army engineer discipline. It introduces the new GE life cycle activities of planning, design, construction, operation, maintenance, transfer, and closure that are used to frame the discussion in other chapters. It then discusses employment considerations for GE. Chapter 2 describes GE support across the range of military operations at theater, operational, and tactical levels. Chapter 3 provides an overview of GE planning and design that is discussed in detail within other chapters. Chapter 4 discusses construction and introduces multi-Service doctrine on project management and estimating. This chapter discusses methods of construction and construction material procurement and production. It adds the framework of construction techniques that are discussed in numerous subordinate technical manuals. Chapter 5 provides an overview of seaports. Seaports could be used for deployment and redeployment as a seaport of debarkation or as a seaport of embarkation. It includes a discussion on planning and design, construction, operation, maintenance, and logistics over-the-shore (LOTS) support. Chapter 6 provides an overview of airfields and heliports aligned with revised subordinate doctrine to include planning and design, construction, operation, and maintenance. Chapter 7 provides an overview of roads and railroads aligned with revised subordinate doctrine to include planning and design, construction, operation, and maintenance. Chapter 8 discusses an overview of bridging to include bridge types, planning and design, construction, operation, and maintenance. Chapter 9 merges discussion of base camps and bed-down facilities that includes support area facilities. It discusses a GE overview of base camps. It also includes base camp responsibilities, Service capabilities, planning and design, standards, site layout, and construction. Chapter 10 discusses real estate and provides an overview of real property maintenance that is covered in detail within the other chapters of this manual. It deletes the use of the term real property maintenance activities and only discusses real property maintenance. Chapter 11 discusses electrical power systems and design considerations for reliability, efficiency, and scalability. It also discusses the emerging requirements to store electricity and incorporate renewable sources of energy. It provides an overview of Service capabilities and electrical safety requirements. Chapter 12 discusses GE support to the sustainment/combat service support water functions of production and distribution. The chapter discusses well drilling and includes water production and distribution responsibilities, planning and design, Service capabilities, employment, and operations. It expands discussion on water distribution within facilities as a plumbing task. The GE doctrine provided in this manual presents an overview of a wide range of topics and allows the reader to understand how the topics fit together.