Loopgraafmortier Duits model H20 (Leichter Minenwerfer n/A) kaliber 7,58 cm met getrokken loop, op grondplaat met radaffuit Britain in arms = (L'effort britannique) / Jules Destrée ; with a preface by Georges Clemenceau ; translated from the French by J. Lewis May Ostend and Zeebrugge : april 23: May 10, 1918 / The dispatches of Vice-Admiral Sir Roger Keyes and other Narratives of the Operations ; ed. … Despatches from the Vice-Admiral, Dover-Patrol, on Zeebrugge and Ostend operations, 22nd-23rd April, 1918, and Ostend operations, 10th May, 1918 Military operations : Gallipoli : Inception of the campaign to may 1915 / comp. by C.F. Aspinall-Oglander ; maps and sketches comp. by A.F. Becke battle of Jutland Bank May 31 - June 1, 1916 : the dispatches of Admiral Sir John Jellicoe and Vice-Admiral Sir David Beatty / ed. … battle of Verdun : (February 21-May 7) / H. Dugard ; translated by F. Appleby Holt
