CHAPTER XVII.

CONCLUSION 354

EXPLANATION OF SOME OF THE TECHNICAL TERMS USED IN THIS BOOK 385

LIST OF ILLUSTRATIONS.

FIG. PAGE

1. MAP OF THE LAND OF OHET _Frontispiece_.

THE SAPPER _Vignette_.

2. THE OPPIDUM 14

3. RAMPART OF THE OPPIDUM 15

4. GATES OF THE OPPIDUM 16

5. THE NÉMÈDE AND THE DRUIDS' DWELLINGS 16

FIRST SIEGE.--SIGILD AND TOMAR 32

6. " " WOODEN TOWERS OF THE OPPIDUM 35

7. " " ADVANCED WORK OF THE OPPIDUM 46

8. " " ASSAULT ON THE OPPIDUM 55

9. THE TOWN AND CITÉ D'AVON (WAR OF THE GAULS) 70

10. SECOND SIEGE.--THE ROMAN 'AGGER' AND 'VINEÆ' 79

11. " " A STIMULUS 80

12. " " THE MOVABLE TOWER 82

13. " " ATTACK ON THE STRONGHOLD OF THE OPPIDUM 86

14. THE ROMAN PERMANENT CAMP 91

15. GATES OF THE CAMP 93

16. THE GALLO-ROMAN TOWN. CITY JULIANA (_to face_) 99

17. SECTION OF THE RAMPART WALL 103

18. PLANS OF THE NORTH GATE 104

19. VIEW OF THE NORTH GATE 105

20. GENERAL VIEW OF THE GREAT SOUTHERN TÊTE DE PONT 106

21. THIRD SIEGE.--THE AGGER 123

22. " " WORK BEFORE THE EAST GATE 124

23. " " THE 'VALLUM' 125

24. " " THE NORTHERN SALIENT 126

25. " " BURNING OF THE WOODEN BRIDGE 128

26. " " THE ATTACK--THE MOVABLE BRIDGE INTENDED FOR CROSSING THE SMALL ARM OF THE RIVER ABONIA 131

27. " " THE AGGER 139

28. " " THE ONAGER BATTERY 141

29. " " THE MINE AND COUNTER MINE 142

30. " " THE BREACH MINE 145

31. " " DEFENCE OF THE BREACH 146

32. " " THE BREACH OCCUPIED BY THE ASSAILANTS 147

33. " " MINING BENEATH THE NORTH-WEST CORNER TOWER 151

34. " " MINING BENEATH THE NORTHERN RAMPART WALL 153

35. THE OLD CASTLE OF LA ROCHE-PONT 167

36. THE CASTLE OF LA ROCHE-PONT OF THE TWELFTH CENTURY (_to face_) 168

37. BIRD'S-EYE VIEW OF THE CASTLE OF LA ROCHE-PONT 172

38. BRETÈCHE OF THE BRIDGE 184

39. FOURTH SIEGE.--THE BURGUNDIAN INTRENCHMENT OF CONTRAVALLATION 185

40. " " NIGHT SORTIE OF THE GARRISON OF THE CASTLE (_to face_) 187

41. " " THE BESIEGERS GET POSSESSION OF THE BARBICAN 191

42. " " THE CAT 193

43. " " THE BOSSON (_to face_) 197

44. " " THE BREACH AND THE BURNING OF THE NORTH GATE 199

45. " " THE TAKING OF THE BAILEY (_to face_) 210

46. " " THE SMALL BOSSON 212

47. " " THE MOVABLE TOWER (_to face_) 222

48. THE TOWN OF LA ROCHE-PONT IS FORTIFIED BY CHARLES THE BOLD 228

49. BIRD'S-EYE VIEW OF THE NORTHERN BOULEVARD AND FRONT 230

50. MASONRY TOWER FOR ARTILLERY 231

51. BIRD'S-EYE VIEW OF BOULEVARD AND RAMPARTS 233

52. TÊTE DE PONT AND CAVALIER 237

53. FIFTH SIEGE.--ATTACK ON THE NORTHERN BOULEVARD 243

54. " " DEFENCE OF THE NORTHERN BOULEVARD 249

55. " " ASSAULT ON THE BOULEVARD 253

56. " " ATTACK OF THE OLD FRONT (_to face_) 255

57. FIFTH SIEGE.--THE OLD NORTH GATE BATTERED BY FIRE ARTILLERY 256

58. " " TAKING OF AN ARTILLERY TOWER (_to face_) 266

59. THE BASTIONS OF ERRARD DE LE BAR-LE-DUC 277

60. THE NORTH WORK 279

61. ONE OF THE BASTIONS 280

62. SIXTH SIEGE.--GALAS' WORKS OF APPROACH 289

63. " " THE ATTACK ON ONE OF THE BESIEGERS' PLACE D'ARMES (_to face_) 290

64. " " FORCIA'S PLAN OF SIEGE 298

65. VAUBAN'S DEFENCES 305

66. VAUBAN'S OUTWORK 307

67. SECTIONS OF THE OUTWORK 309

68. TRACE OF THE OUTWORK 311

69. REVÊTEMENT OF THE BASTIONS 313

70. SEVENTH SIEGE.--THE THEORETICAL ATTACK OF VAUBAN'S WORK (_to face_) 337

71. " " THE THIRD PARALLEL AND THE CROWNING OF THE COUVERT WAY (_to face_) 338

72. " " CAPTAIN ALLAUD'S ADVANCED WORK 341

73. " " SECTIONS AND INTERIOR VIEW OF THE WORK 347

74. " " CAPTAIN ALLAUD'S CRÉMAILLÈRE WORK 341

75. " " ATTACK ON THE WORKS OF COUNTER-APPROACH 347

76. ILLUSTRATIONS OF THE PRINCIPLES OF ATTACK AND DEFENCE 358

77. DITTO 358

78. DITTO 359

79. APPLICATION OF THE PRINCIPLE: "WHAT DEFENDS SHOULD ITSELF BE DEFENDED" 361

80. ILLUSTRATION OF THE ALTERED CONDITIONS NECESSITATED BY ARTILLERY OF LONG RANGE 362

81. PLAN OF FORTRESS SHOWING HOW THOSE CONDITIONS ARE MET 364

82. BLOCK PLAN OF THE DETACHED FORTS 365

83. THEORETICAL PLAN OF A MODERN FORTRESS 366

84. EMPLOYMENT OF THE POLYGONAL SYSTEM, DETACHED FORTS 372

85. DEFENSIVE SYSTEM OF GREAT INTRENCHED CAMP 375

ANNALS OF A FORTRESS.

"Je sçais bien qu'il faut perdre, qu'il faut gaigner, et n'y a rien d'imprenable; mais desirez cent mil fois plustost la mort si tous moyens ne vous deffaillent, que dire ce méchant et vilain mot: 'JE LA RENDS.'"--_Comment._ de MONTLUC.