Changes

*[https://books.google.com.au/books?id=Du7IVSjOdRAC&pg=PA341 "Datta Khel May 1930"] page 341 "Armoured Fighting Vehicles in Action" by Lieutenant Robert J Icks, Infantry (Tanks) Reserve. ''Coast Artillery Journal'' [USA] Sept-Oct 1933 Google Books.*[https://archive.org/stream/in.ernet.dli.2015.284708/2015.284708.Usi-Journal#page/n67/mode/2up "Two recent actions against Afridis"] I-The Night operations against Spintigga 10/11th March 1931; II- The Action in the Gandao Kotal 18th March 1931 (page 73). From pages 62-86 ''Journal of the United Service Institution of India'', Volume 62, 1932'' Archive.org*''Official History Of of Operations On The on the North-West Frontier Of of India 1920-1935'' is available in a reprint edition<ref>[https://www.naval-military-press.com/product/official-history-of-operations-on-the-north-west-frontier-of-india-1920-1935/ ''Official History Of of Operations On The on the North-West Frontier Of of India 1920-1935''] Naval & Military Press</ref> which in turn is available as part of an online book on the Ancestry owned pay website fold3.<ref> [https://www.fold3.com/browse/251/hTGb85NZ8EamDdOvs1LINNg2y ''Official History of Operations on the NW Frontier of India''] fold3 (located in World War2/Military books/India). Consists and consisting of 2 books).</ref>