ATP 3-34.81 — Engineer Reconnaissance (mcwp 3-17.4) (this Item Is Published W/ Basic Incl C1)

ATP 3-34.81 governs tactical and technical engineer reconnaissance supporting military activities across the full range of military operations.

Search ATP 3-34.81

  • Publication number: ATP 3-34.81
  • Title: ENGINEER RECONNAISSANCE (MCWP 3-17.4) (THIS ITEM IS PUBLISHED W/ BASIC INCL C1)
  • Date: 03/01/2016
  • Proponent: T2COM
  • Status: ACTIVE

View ATP 3-34.81 on armypubs.army.mil


It covers engineer reconnaissance planning, team capabilities, reconnaissance support, route reconnaissance, assessments, surveys, infrastructure, and environmental reconnaissance. It describes technical information collection, engineer resource assessments, route and gap-crossing measurements, and support to mobility, countermobility, and survivability.

Applies to: ATP 3-34.81 applies to Active Army, Army National Guard/Army National Guard of the United States, United States Army Reserve, Marine Corps, and Marine Corps Reserves unless otherwise stated.

Topics covered

  • Engineer reconnaissance teams
  • Route reconnaissance
  • Engineer assessments and surveys
  • Infrastructure reconnaissance
  • Gap-crossing reconnaissance
  • Route classification
  • Engineer resource assessment
  • Reconnaissance support

Questions and answers

Do engineer units have designated reconnaissance organizations?

Engineer units do not have designated reconnaissance organizations. (paragraph 1-1)

When are engineer assessment or survey teams generally not employed?

The assessment or survey teams are generally not employed when direct contact with the enemy is likely. (paragraph 1-27)

What does an engineer assessment provide compared with a survey?

The assessment requires less time, but it provides less technical detail. (paragraph 1-28)

What information do ERTs collect during mobility reconnaissance?

The primary focus of the ERT is collecting technical information in support of mobility. (paragraph 3-2)

How often should stream depth be measured along a planned crossing route?

The depth should be measured every 3 meters along the planned stream-crossing route. (paragraph 5-27)

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