Description

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Field Manual (FM) 3-34.400 is the primary implementing manual for the engineer function that bears its name (the others being combat and geospatial engineering). This FM provides the linkage between the engineering doctrine contained in FM 3-0, FM 3-34, and Joint Publication (JP) 3-34. It specifically draws from the material presented in the Army's keystone engineer manual (FM 3-34) and should always be used with an understanding of its relationship to that manual and its role as the keystone engineer manual. As the implementing manual for the engineer function of general engineering (GE), FM 3-34.400 describes the operational environment (OE) and how to apply and integrate GE principles in support of full spectrum operations and the linkage of GE to assured mobility. This FM focuses on the establishment and maintenance of lines of communications (LOCs) and sustainment operations that support operational requirements throughout the area of operations (AO).