'In the Next War' was a short series of books published in Britain in 1938 and 1939, edited by Basil Liddell Hart. Unlike the earlier To-day and To-morrow books which attempted to predict things to come, these were much less eclectic and much more narrowly focused on future warfare: airpower; seapower; tanks, infantry and the Territorials; gas, civilians and propaganda. The actual arrival of the next war in 1939 seems to have cut the series short, as two of these were never published (those on infantry and, to my regret, civilians).
The authors were also drawn from a more select group, as they mostly seem to have had prior credentials in their subjects (not always the case with 'To-day and To-morrow', where the ability to come up with an interesting take seems to have been at least as important as expertise). J. M. Spaight was a prolific writer on airpower, and late of the Air Ministry; Jonathan Griffin had written a couple of widely read books on similar topics (and also editor of Essential News and, oddly enough, translator of Babar the Elephant) which suggests to me that his book on civilians would have focused on ARP. (Both Spaight and Griffin were now more-or-less sceptical of the knock-out blow paradigm.) Most of the other authors were or had been in the services, mostly in the Army. Henry Thuiller had been head of the wartime Trench Warfare Supply Department (which had a responsibility for manufacture of chemical weapons), while Eric Dorman-Smith was to have a controversial career in the next war, but in the last one had served with distinction and in the meantime had experience with the Army's experiments with mechanised warfare. Sidney Rogerson was the author of Twelve Days, a popular memoir of the Somme, but I'm not sure what his qualifications for writing on propaganda were. Eric Sheppard had written a couple of books on the American Civil War, as well as what looks like a military history study guide for Sandhurst. Russell Grenfell had served in the Royal Navy and was a veteran of Jutland; he already had a number of books on naval matters to his credit (and in 1940 wrote under the pseudonym T 124, arguing that with adequate sea- and airpower, the capture of the Low Countries by a hostile nation was nothing to fear). I don't know much about Green; as he had a DFC he must have been in the RFC/RAF but here he is writing about the Territorials, with which he must have had some connection. His volume was actually advertised in advance as being by the Deputy Director General of the Territorial Army, Sir John Brown, but perhaps he had to turn this down due to his official position.
From the little I've read of it, I think 'In the Next War' is an interesting series, so I've put up a short bibliography. It certainly presents a very different take on the future than that of 'To-day and To-morrow': rather than bright and exciting, it was going to be bloody. But that the future was still thought worth writing about still reflects a faith that there probably would, after all, be some sort of world worth to live and die for.
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