Army Field Manual FM 3-25.26 (U.S. Army Map Reading and Land Navigation Handbook)
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PREFACE
The purpose of this field manual is to provide a standardized source document for Armywide reference on map reading and land navigation. This manual applies to every soldier in the Army regardless of service branch, MOS, or rank. This manual also contains both doctrine and training guidance on these subjects. Part One addresses map reading and Part Two, land navigation. The appendixes include a list of exportable training materials, a matrix of land navigation tasks, an introduction to orienteering, and a discussion of several
devices that can assist the soldier in land navigation.
CONTENTS
CHAPTER 1. TRAINING STRATEGY
1-1. Building-Block Approach .1-1
1-2. Armywide Implementation .1-2
1-3. Safety.1-2
CHAPTER 2. MAPS
2-1. Definition 2-1
2-2. Purpose2-1
2-3. Procurement 2-2
2-4. Security .2-3
2-5. Care .2-3
2-6. Categories2-3
2-7. Military Map Substitutes.2-7
2-8. Standards of Accuracy 2-8
CHAPTER 3. MARGINAL INFORMATION AND SYMBOLS
3-1. Marginal Information on a Military Map3-1
3-2. Additional Notes .3-5
3-3. Topographic Map Symbols .3-5
3-4. Military Symbols.3-6
3-5. Colors Used on a Military Map.3-6
CHAPTER 4. GRIDS
4-1. Reference System4-1
4-2. Geographic Coordinates4-1
4-3. Military Grids4-10
4-4. United States Army Military Grid Reference System 4-12
4-5. Locate a Point Using Grid Coordinates 4-17
4-6. Locate a Point Using the US Army Military Grid
Reference System4-21
4-7. Grid Reference Box.4-24
4-8. Other Grid Systems .4-25
4-9. Protection of Map Coordinates and Locations4-27
CHAPTER 5. SCALE AND DISTANCE
5-1. Representative Fraction.5-1
5-2. Graphic (Bar) Scales .5-3
5-3. Other Methods.5-11
CHAPTER 6. DIRECTION
6-1. Methods of Expressing Direction .6-1
6-2. Base Lines .6-1
6-3. Azimuths .6-2
6-4. Grid Azimuths.6-4
6-5. Protractor.6-5
6-6. Declination Diagram .6-8
6-7. Intersection6-14
6-8. Resection.6-16
6-9. Modified Resection .6-19
6-10. Polar Coordinates6-20
CHAPTER 7. OVERLAYS
7-1. Purpose7-1
7-2. Map Overlay .7-1
7-3. Aerial Photograph Overlay .7-3
CHAPTER 8. AERIAL PHOTOGRAPHS
8-1. Comparison With Maps 8-1
8-2. Types.8-1
8-3. Types of Film 8-7
8-4. Numbering and Titling Information8-7
8-5. Scale Determination8-8
8-6. Indexing 8-10
8-7. Orienting of Photograph8-13
8-8. Point Designation Grid8-14
8-9. Identification of Photograph Features.8-17
8-10. Stereovision.8-18
CHAPTER 9. NAVIGATION EQUIPMENT AND METHODS
9-1. Types of Compasses9-1
9-2. Lensatic Compass9-1
9-3. Compass Handling 9-2
9-4. Using a Compass.9-3
9-5. Field-Expedient Methods9-7
9-6. Global Positioning System9-12
CHAPTER 10. ELEVATION AND RELIEF
10-1. Definitions.10-1
10-2. Methods of Depicting Relief.10-1
10-3. Contour Intervals.10-2
10-4. Types of Slopes .10-5
10-5. Percentage of Slope.10-8
10-6. Terrain Features 10-11
10-7. Interpretation of Terrain Features .10-17
10-8. Profiles 10-20
CHAPTER 11. TERRAIN ASSOCIATION
11-1. Orienting the Map .11-1
11-2. Locations.11-6
11-3. Terrain Association Usage 11-7
11-4. Tactical Considerations.11-9
11-5. Movement and Route Selection 11-12
11-6. Navigation Methods11-14
11-7. Night Navigation.11-18
CHAPTER 12. MOUNTED LAND NAVIGATION
12-1. Principles.12-1
12-2. Navigator's Duties .12-1
12-3. Movement .12-1
12-4. Terrain Association Navigation 12-3
12-5. Dead Reckoning Navigation .12-6
12-6. Stabilized Turret Alignment Navigation.12-7
12-7. Combination Navigation .12-8
CHAPTER 13. NAVIGATION IN DIFFERENT TYPES OF TERRAIN
13-1. Desert Terrain .13-1
13-2. Mountain Terrain 13-4
13-3. Jungle Terrain .13-6
13-4. Arctic Terrain13-9
14-1. Set Up a Sustainment Program .14-1
14-2. Set Up a Train-the-Trainer Program .14-2
14-3. Set Up a Land Navigation Course.14-2
APPENDIX A. FIELD SKETCHING.A-1
APPENDIX B. MAP FOLDING TECHNIQUES B-1
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