Item 02: Sydney B. Young war diary, 24 July-14 October 1916 - Page 93
They know when the Zeps cross Belgium, and can tell just about where they are.
There are what are called 3 circles and every circle the Zep crosses the people are informed their whereabouts by either 1 2 or 3 short flashes. Otherwise no search lights are used until the Zeps are within range when about 12 streams of light pick up the Zep and the guns roar out often putting paid to her account.
Caught 10.20 train back to Camp our leave having expired.
2nd Shifted camp about