Hal Paine and his friend Chester Crawford are in a Berlin hotel with Hal’s mother when the Kaiser declares war in 1914. Separated from her in the confusion, the boys are captured, escape from an old castle, take to the air, slip over the frontier and reach Liège, where the Belgian forts are holding out against the German advance.
The opening volume of a long-running First World War adventure series for boys. Download the free EPUB.