Field fortifications are natural or man-made protective features used as defensive obstacles, personnel and weapons shelters, and protected firing positions.
This sub-course teaches you how to construct personnel, vehicle, and weapons emplacements, entrenchments, shelters, entanglements, and obstacles under various climatic conditions.
The format of this subcontract has been developed to facilitate student self–pacing and self–testing. Each lesson in this sub-course is followed by a number of Self–Test questions and exercises designed for a review of that lesson. Standard plans, types of material, construction procedures, and estimated time and labor requirements are comprehensively detailed.
After completing study of the lesson, you should answer the Self–Test exercises, then turn to the back of the sub-course booklet where the correct answers to the Self–Test have been included. A comparison of your answers with those given in the back of the sub-course will indicate your knowledge and understanding of the material presented.
The sub-course consists of five lessons and an examination as follows:
- 1. Purpose and Requirements of Field Fortifications.
- 2. Trenches, and Fieldworks.
- 3. Obstacle Employment.
- 4. Barbed Wire Entanglements.
- 5. Camouflage (Protection Against Enemy Surveillance).
- Examination.

