AIR SERVICE BOYS OVER THE
ENEMY'S LINE
CONTENTS
| CHAPTER | PAGE | |
| I. | Back of the Trenches | 1 |
| II. | The Winged Messenger | 10 |
| III. | A Spy Baffled | 19 |
| IV. | Praise from the General | 27 |
| V. | The Strange Warning | 35 |
| VI. | Looking Backward | 45 |
| VII. | The Great Day Arrives | 53 |
| VIII. | Over the Enemy's Lines | 61 |
| IX. | Winning His Spurs | 70 |
| X. | After the Battle | 78 |
| XI. | A Show on the Front | 85 |
| XII. | Clowns on the Wing | 94 |
| XIII. | More Work in Prospect | 103 |
| XIV. | Off on a Daring Mission | 113 |
| XV. | The Moonlight Flight | 120 |
| XVI. | Landing Close to Metz | 129 |
| XVII. | More Trouble for the Chums | 137 |
| XVIII. | The Lone House by the Roadside | 144 |
| XIX. | A Nest of Spies | 153 |
| XX. | Jack Climbs a Wall | 162 |
| XXI. | In the Old Lorraine Chateau | 171 |
