6. Artificial obstacles for strengthening field-works; requisites for their selection and application; method of construction; advanced ditches (demi and entire;) trous-de-loup; abattis; palisades and fraises; barriers; chevaux-de-frise; pickets; caltrops; harrows; sluices and inundations; fougasses; blockhouses; caponiers; double, single, and demi-caponiers à revers.
7. Strength of garrison of field-works.
8. Defilading, horizontal and vertical, of open and inclosed works; traverses and bonnettes.
9. Construction of small open and inclosed field-works; marking out; tracing; profiling; number and employment of workmen; excavating the ditch; formation and revetment of the slopes with sods, fascines, wicker-work, gabions, sand-bags, wood, or stones; selection, preparation, and application of the reveting materials. (Of the execution of the revetment only so much as may show whether the examinee will be capable of undertaking the direction of such works in an efficient manner.)
10. Fortification of heights and defiles.
11. Object, general arrangement, and advantageous situation of a tête-de-pont.
12. Arrangements for the defense of woods, hedges, houses, churches, and churchyards.
13. Attack and defense of a redoubt; surprise; attack by open force.
14. Repairing and destroying roads, fords, and bridges, wooden and stone; construction of foot bridges, carriage bridges, bridges across swamps.
B. Permanent Fortifications.