https://ctc.usma.edu/houthi-war-machine-guerrilla-war-state-capture/
https://www.bbc.com/news/magazine-16544490
http://www.allworldwars.com/Sniping%20in%20France%20by%20Major%20Hesketh-Prichard.html
https://www.military-history.org/articles/10-sniper-tactics-from-the-red-sniper.htm
https://www.telegraph.co.uk/obituaries/0/lest-forget-tom-baker-renowned-ww1-sniper-turned-duck-decoyman/
https://www.cnet.com/news/irobot-unveils-sniper-detector/
https://www.rand.org/content/dam/rand/pubs/monograph_reports/MR1187/MR1187.appc.pdf
https://www.telegraph.co.uk/history/world-war-one/11937199/Secrets-of-World-War-I-Papier-mache-heads-ponies-dressed-as-zebras-and-fluorescent-sea-lions.html