Milsurp enthusiasts might enjoy Sniping in France, by Major Vernon Hesketh-Prichard, 1920, the definitive memoir on the subject. This is a nice clean copy from the Cornell University Library. You can read it on line or download the PDF. https://archive.org/details/cu31924027946619
See also The History of Sniping and Sharpshooting, by Major John L. Plaister, 2008, https://archive.org/details/JohnPlasterHistoryOfSnipingAndSharpshooting
See also The History of Sniping and Sharpshooting, by Major John L. Plaister, 2008, https://archive.org/details/JohnPlasterHistoryOfSnipingAndSharpshooting
