Table of Contents Acknowledgments      Preface      Introduction      1. Military Wireless Before the War      2. Operational Signals—Pre-war and Early Mobile Warfare      3. Operational Signals—Static Warfare in 1915      4. 1915—The RFC Invents Wireless Telephony      5. Operational Signals on the Somme      6. A Counterfactual—The Somme with Wireless Telephony      7. Operational Signals in 1917      8. A Counterfactual—Passchendaele and Cambrai with Wireless Telephony      9. Operational Signals in 1918      10. A Counterfactual—The German Spring Offensive and Hundred Days with Wireless Telephony      11. Command, Control and Communications      12. Intercept, Encryption and Jamming      13. An Assessment of Wireless as It Was Actually Employed      Conclusion      Appendix A: Wireless Technology      Appendix B: Signal Service Units, 1914      Appendix C: Signals Service Units Later in the War      Chapter Notes      Bibliography      Index