Weapons, Warfare and Society in Britain I 250-750BC
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Weapons, Warfare and Society in Britain I 250-750BC VolUBle I Susan Deirdre Bridgford University of Sheffield Department of Archaeology and Prehistory September 2000 This thesis was submitted as part fulfilment of the requirements for the Degree of Doctor of Philosophy. Acknowledgments My thanks must first go to my supervisor, Dr Barbara Ottaway, for the enormous care she has taken in bringing this project to fruition. Her encouragement, understanding and great patience have been invaluable to me. I am grateful, on many counts, to Dr Peter Northover, who has been unstinting in giving metallurgical advice and access both to his samples and his unpublished data. His provision of enthusiasm, moral support and hospitality have also been much appreCiated. The University of Sheffield provided the financial support, via the Hossein Farmy Scholarship award, which enabled the undertaking of this project. Many members of the University staff assisted me during its progress. I would particularly like to thank Brian Keeley, for his many efforts on my behalf, and Kathryn Goldsack, for her practical help and imperturbable good humour, over the years . This project would not have been possible without access to the weapons, for which I would like to thank Dr Stuart Needham, at the British Museum, Trevor Cowie, at the National Museum of Scotland, Dr Christopher Chippindale, at the Cambridge Museum of Archaeology and Anthropology, Dr Euan MacKie, at the Hunterian Museum, Dr Jon Cotton at the Museum of London, Dr Brian Gilmour at the Royal Armouries, Dr Francis Pryor at Flag Fen and Dr Andrew Rogerson, at Norfolk Landscape Archaeology. The first three also allowed me to sample weapons in their collections, for which my gratitude is unbounded. In the course of the project I received co-operation and assistance from a great many staff both within the museums I visited and from those, all over the country, who completed my questionnaire, often providing additional information. I am most grateful to them all. I have received advice and access to pre-publication literature from many sources. My thanks for both are due to Dr Stuart Needham, Trevor COwie, Dr David Coombs, Dr Christopher Chippindale, Richard Osgood, Simon O'Faolaln, Dr Barbara Ottaway, Emma Wager, Kate Welham and Dr Paul BUdd. Others, for whose advice, assistance and discussion I am grateful, include Dr Andrew Sherratt, Henry Blyth, Dr John Carman, Dr Roger Doonan, Dr David Dungworth and Jenny Moore. Dr Geoff Dyer provided advice on chemistry and KT Barratt provided statistical assistance along with moral support in all crises. My wonderful parents, Bill and Billie Robinson, deserve medals for their forbearance in putting up with me for so many years, particularly these last few, and Steve Dyer, who has kept me going throughout, and who now knows rather more than he wanted to about the Bronze Age, has been superb. Above alii would like to thank Robert Seaton who did so much hard work during the experimental phase for no other reason than that 'it sounded interesting'. I hope he feels the same way about the results. ii Weapons, Warfare and Society in Britain 1250-750BC S D Bridgford Degree of Doctor of Philosophy Department of Archaeology and Prehistory University of Sheffield Abstract This research project was designed as a large scale detailed study of British swords and spearheads, of the period from approximately 1250-750BC. 202 small metallurgical samples and 4 large sword cross sections were examined metallographically. Chemical compositions were ascertained. Sections of 'sword edge' were prepared and impacted experimentally to reproduce combat damage and the results used to help assess the 499 swords and 485 spearheads, which were measured and examined visually. The results were analysed statistically according to regional and typological groupings. The distribution of manufacturing characteristics showed significant regional and typological variations and indicate a hierarchy of technical proficiency. Metallographic examinations also revealed a number of weapons which had been bumt. The compositional analyses showed metal being recycled and mixed, although alloys used were similar. Aspects of typological classification were quantified and regional patterns of distribution were assessed. Patterns of damage confirmed that that the majority of the weapons had probably been used in combat before deposition. There were significant regional and chronological differences in the proportions so used. Patterns of non-combat damage, breakage and depositional context showed that despite evident similarities some highly significant regional, chronological and typological differences existed. The weapons indicate that warfare was endemic but probably sporadic and low level. Communities appear to have exercised some form of social sanctioning over warriors, in part by incorporating weapons and the concept of war symbolically within their ceremonials. Deposition practices varied with time and locality but many do appear to have been ritual. There were also distinct regional and chronological traditions in the deSign, manufacturing and pre-depositional combat use of weapons. The evidence pOints to an escalation in long distance travel and exchange of goods and ideas, increasing contacts between regions, where people adapted the new to their own society. iii Contents Page Volume I Acknowledgements ii Abstract iii 1 Introduction 1 1.1 Aims 1 1.1.1 The Research Programme 2 1.1.2 Interpretation 3 1.1.3 Warfare, Weapons and Social Context 5 1.1.4 Regionality 6 1.2 Weapon Typology and Chronology 9 1.2.1 Sword Typology 9 1.2.2 Spearhead Typology 13 1.2.3 Chronology 15 1.3 Literature Review 17 1.3.1 War 18 1.3.2 Death 19 1.3.3 Sites 20 1.3.4 Mining 22 1.3.5 Movement of Materials and Artefacts 24 1.3.6 Deposition 25 1.4 Artefact Research Review 27 1.4.1 LBA Weapons 28 1.4.2 Wear Studies 30 1.5 Metallurgical Studies 33 1.6 British LBA Weapons in Museum Collections 40 1.6.1 Data Collection 41 1.6.2 Estimation of Sword Population 42 1.6.3 Estimation of Spearhead Population 43 2 Microstructural and Compositional Analyses 45 2.1 Sampling Criteria 45 2.2 Method 48 2.3 Microstructural Characteristics 51 2.3.1 Porosity 52 2.3.2 Distortion of InclUSions 54 2.3.3 Corrosion 56 2.3.4 High Tin Phases 57 2.3.5 COring & Recrystallisation 59 2.3.6 Distortion of Grains 61 2.3.7 Grain Size 62 2.3.8 Hardness 64 2.4 Metallographlc Examinations of Small Samples - Summary 68 2.5 Cross Sectional Microstructures 72 iv 2.5.1 Blackmoor Hoard, Sample BM20, Sword 1891 5·1435 72 2.5.2 Gilmonby Hoard, Sample Gil 76 73 2.5.3 Gilmonby Hoard, Sample Gil 81 74 2.5.4 Royal Armouries, G06 74 2.5.5 Manufacturing Processes 75 2.6 Composition 77 2.6.1 Trace Elements 77 2.6.1.1 Total Trace Elements 78 2.6.1.2 Compositional Groups 79 2.6.1.3 Trace Elements - Summary 83 2.6.2 Alloying Elements 84 2.6.2.1 Tin 84 2.6.2.2 Lead 86 2.6.2.3 Alloying Elements - Summary 88 2.6.3 Compositional Comparisons 89 3 Experimental Replication of Edge Damage 92 3.1 Experimental Blade Manufacture 92 3.1.1 Edge Finishing· First Session: Sword Section 1. 94 3.1.2 Edge Finishing - Second Session: Sword Sections 2, 3 and 4. 97 3.1.3 Edge Finishing - Third Session: Sword Sections 5 and 6. 99 3.1.4 Blade Edge Finishing - Summary 101 3.2 Replication of Edge Damage 102 3.2.1 Blade on Blade Impacts 103 3.2.2 Further Impact Modes 103 3.3 Results 104 3.4 Impact Damage from Actual Sword Fighting 108 4 Physical Characteristics of Weapons 109 4.1 Methodological Considerations 109 4.1.1 Typology 109 4.1.2 Design 111 4.1.3 Manufacture 112 4.1.4 Use 116 4.2 Swords 117 4.2.1 Sword Typology 117 4.2.2 Sword Design Characteristics 119 4.2.3 SWord Manufacturing Characteristics 122 4.2.4 Sword Use Characteristics 124 4;2.5 Swords - Summary 128 4.3 Spearheads 131 4.3.1 Spearhead Typology 131 4.3.1.1 Definitions of characteristics 132 4.3.1.2 Analyses of characteristics 134 4.3.1.3 Spearhead groups 137 4.3.1.4 Dimensional analyses 138 4.3.1.5 Spearhead Typology - Summary 141 v 4.3.2 Spearhead Design 142 4.3.3 Spearhead Manufacture 144 4.3.4 Spearhead Use 145 4.3.5 Spearheads - Summary 148 5 Warfare, Weapon Deposition and Social Contexts 151 5.1 Conflict and Warfare 151 5.1.1 Varieties of Warfare and their Characteristics 151 5.1.2 Modes of Combat in LBA Britain 155 5.2 Weapon Deposition 160 5.2.1 Weapon Deposition and Hoard Contents 160 5.2.2 Deposition Contexts 161 5.2.3 State of Completeness of Deposited Weapons 165 5.2.3. 1 State of Completeness of Swords 169 5.2.3.2 State of Completeness of Spearheads 170 5.2.4 Interaction between Deposition Context and Completeness of Weapons 172 5.2.4.1 Swords - Completeness and Context 173 5.2.4.2 Spearheads - Completeness and Context 174 5.2.5 Deposition Patterns - Summary 175 5.3 Social Contexts 178 6 Regionality 187 6.1 Raw materials - Metal Production and Circulation 187 6.2 Weapon Production - Workshops and Weapon Makers 192 6.2.1 Metal Working Sites 192 6.2.2 Manufacturing Techniques and Practitioners 196 6.3 Weapon Use and Warfare Patterns 201 6.3.1 Combat Damage 201 6.3.2 Weapon Design 203 6.3.3 Topography, Travel, Land Use, Settlement and Warfare 206 6.4 Weapon Deposition - Regional Variations 211 7 Summary and Conclusions 213 7.1 Metallurgical Analysis - Weapon Production and Weapon Makers 214 7.2 Experimental Impacts - Combat Damage 219 7.3 Weapon Design, Use, Decommissioning and Deposition 220 7.4 Weapons, Warfare and Warriors in their Social Context 224 7.5 Weapons, Warfare and Society - Regional Differentiation within Britain