Marching or Flying by Night Without a Compass

We spotted this modest volume on our travels recently and could not resist it! A very interesting and informative book by Colonel W.A.Tilney, first published in 1915, to aid both soldiers and aviators to find their way home when caught behind enemy lines or over enemy territory. Entitled "Marching or Flying by Night Without a Compass " this soft back example is the 11th edition published in 1940 when no doubt WWII aviators and ground troops found it equally useful in the days long before GPS! It is in very good used condition and is named on the cover to E.P.Jones. It includes a 'Timetable of Directional Stars' for every month of the year and can be used between Latitudes 40 Degrees North - 55 Degrees North. In the introduction Col Tilney states 'On the conclusion of hostilities in the Great war after the system had been tried and tested hundreds of men serving under my command owe their lives and liberty to this simple process'! The booklet contains fold out maps at the back showing stars in the north and south end of the heavenly dome as well as summer, autumn winter and spring direction stars as per the photographs. Would enhance any collection. Measures 6" x 3.5" (15 cm x 9 cm)