I found a "DUMBS" file on my computer from April 2020 containing many links. Maybe it's useful?
http://www.thetruthdenied.com/news/2012/12/14/complete-list-of-military-underground-bases-in-usa/
https://sputniknews.com/military/201806251065742558-US-Army-Training-Underground-Combat/
https://popularmilitary.com/us-army-training-soldiers-fight-subterranean-warzones/
https://www.timesofisrael.com/idf-paratroopers-teach-us-marines-lost-art-of-tunnel-combat/
https://taskandpurpose.com/news/army-subterranean-warfare-training
https://mwi.usma.edu/elephant-tunnel-preparing-fight-win-underground/
https://taskandpurpose.com/military-tech/army-robots-subterranean-warfare
http://www.leatherneck.com/forums/showthread.php?60477-Marines-build-warfare-training-city-in-desert
https://mwi.usma.edu/fixing-way-army-trains-urban-warfare/
https://en.wikipedia.org/wiki/Tunnel_warfare
https://smallwarsjournal.com/jrnl/art/swj-book-review-underground-warfare
https://www.lawfareblog.com/fighting-tunnels
https://www.businessinsider.com.au/darpa-underground-spaces-prep-urban-warfare-2019-8?op=1&r=US&IR=T
https://qz.com/1175447/north-korea-the-us-army-is-training-to-fight-in-tunnels/
https://www.ausa.org/articles/facing-our-underground-nightmares-casting-light-subterranean-fight
https://www.newsweek.com/us-war-north-korea-tunnels-775209
https://www.defenseone.com/technology/2017/12/pentagon-launches-new-push-tunnel-warfare-tech/144748/
https://military.wikia.org/wiki/Tunnel_warfare
https://defense-update.com/20140727_subterranean_ops.html
https://www.breitbart.com/middle-east/2018/03/14/marines-train-israeli-military-urban-warfare-drill/
https://www.popularmechanics.com/technology/design/g152/strangest-military-bases-gallery/
https://www.fpri.org/article/2015/04/fighting-under-the-earth-the-history-of-tunneling-in-warfare/
https://apps.dtic.mil/docs/citations/ADA620416
https://mwi.usma.edu/underground-warfare-wish-list/
https://global.oup.com/academic/product/underground-warfare-9780190457242?cc=au&lang=en&
https://mwi.usma.edu/war-books-preparing-underground-warfare/
https://www.law.columbia.edu/events/underground-warfare
https://callofduty.fandom.com/wiki/Underground
https://roblox.fandom.com/wiki/Community:Stickmasterluke/The_Underground_War
https://youtu.be/ylkEfC-CoyIYouTubeYouTubeYouTube
https://survivalschool.us/survival-info/military-manuals-pdf/
https://www.reddit.com/r/DrainTheSwamp/comments/8v1xnj/underground_warfare_happening/
DUMBs and Billionaire Bunkers: >
https://www.youtube.com/watch?v=cLy6AXjwQK8YouTubeYouTubeYouTube
https://www.youtube.com/watch?v=4LuHqhNEKqkYouTubeYouTubeYouTube
https://www.youtube.com/watch?v=BQtjZFUyvSAYouTubeYouTubeYouTube
https://www.youtube.com/watch?v=L8jU67dOH7kYouTubeYouTubeYouTube
https://www.youtube.com/watch?v=qnL63lEceDEYouTubeYouTubeYouTube
I found a "DUMBS" file on my computer from April 2020 containing many links. Maybe it's useful? https://www.militarytimes.com/news/your-army/2019/02/26/the-subterranean-battlefield-warfare-is-going-underground-into-dark-tight-spaces/ https://www.military.com/daily-news/2018/06/24/army-spending-half-billion-train-troops-fight-underground.html https://sputniknews.com/military/201806251065742558-US-Army-Training-Underground-Combat/ https://www.gizmodo.com.au/2014/02/training-for-underground-warfare-at-a-nuclear-weapons-complex-in-texas/ https://popularmilitary.com/us-army-training-soldiers-fight-subterranean-warzones/ https://www.timesofisrael.com/idf-paratroopers-teach-us-marines-lost-art-of-tunnel-combat/ https://www.defenseone.com/technology/2018/06/underground-may-be-us-militarys-next-warfighting-domain/149296/ https://taskandpurpose.com/news/army-subterranean-warfare-training https://www.popularmechanics.com/military/weapons/a14456933/the-us-army-is-training-to-explore-fight-in-north-koreas-maze-of-tunnels/ https://www.npr.org/2018/01/09/576542410/as-north-korea-tensions-rise-u-s-army-trains-soldiers-to-fight-in-tunnels https://mwi.usma.edu/elephant-tunnel-preparing-fight-win-underground/ https://taskandpurpose.com/military-tech/army-robots-subterranean-warfare http://www.leatherneck.com/forums/showthread.php?60477-Marines-build-warfare-training-city-in-desert https://mwi.usma.edu/fixing-way-army-trains-urban-warfare/ https://en.wikipedia.org/wiki/Tunnel_warfare https://smallwarsjournal.com/jrnl/art/swj-book-review-underground-warfare https://www.desertsun.com/story/news/2015/09/04/marines-train-urban-warfare-simulated-scenarios/71729350/ https://www.lawfareblog.com/fighting-tunnels https://www.businessinsider.com.au/darpa-underground-spaces-prep-urban-warfare-2019-8?op=1&r=US&IR=T https://www.businessinsider.com.au/trump-pushes-for-space-force-as-us-army-preps-for-underground-warfare-2018-8/?op=1&r=US&IR=T https://www.airforcetimes.com/news/your-military/2019/02/26/tunnel-warfare-will-test-the-air-forces-ability-to-spy-and-bomb-a-hidden-enemy/ https://www.airforcetimes.com/news/your-air-force/2019/03/12/the-air-forces-struggle-to-fight-subterranean-warfare/ https://www.nationaldefensemagazine.org/articles/2002/10/31/2002november-navy-sets-up-new-facility-for-tunnelwarfare-training http://www.thetruthdenied.com/news/2012/12/14/complete-list-of-military-underground-bases-in-usa/ https://qz.com/1175447/north-korea-the-us-army-is-training-to-fight-in-tunnels/ https://www.ausa.org/articles/facing-our-underground-nightmares-casting-light-subterranean-fight https://www.newsweek.com/us-war-north-korea-tunnels-775209 https://www.c4isrnet.com/unmanned/2019/06/03/how-the-military-could-find-robots-it-needs-to-win-underground/ https://www.defenseone.com/technology/2017/12/pentagon-launches-new-push-tunnel-warfare-tech/144748/ https://military.wikia.org/wiki/Tunnel_warfare https://defense-update.com/20140727_subterranean_ops.html https://www.breitbart.com/middle-east/2018/03/14/marines-train-israeli-military-urban-warfare-drill/ https://www.popularmechanics.com/technology/design/g152/strangest-military-bases-gallery/ https://www.fpri.org/article/2015/04/fighting-under-the-earth-the-history-of-tunneling-in-warfare/ https://www.washingtonpost.com/news/checkpoint/wp/2014/07/21/hamas-tactics-highlight-u-s-militarys-preparation-for-tunnel-warfare/ https://apps.dtic.mil/docs/citations/ADA620416 https://mwi.usma.edu/underground-warfare-wish-list/ https://global.oup.com/academic/product/underground-warfare-9780190457242?cc=au&lang=en& https://mwi.usma.edu/war-books-preparing-underground-warfare/ https://www.law.columbia.edu/events/underground-warfare https://callofduty.fandom.com/wiki/Underground https://roblox.fandom.com/wiki/Community:Stickmasterluke/The_Underground_War https://youtu.be/ylkEfC-CoyIYouTubeYouTubeYouTube https://survivalschool.us/survival-info/military-manuals-pdf/ https://www.reddit.com/r/DrainTheSwamp/comments/8v1xnj/underground_warfare_happening/ DUMBs and Billionaire Bunkers: > https://www.youtube.com/watch?v=cLy6AXjwQK8YouTubeYouTubeYouTube https://www.youtube.com/watch?v=bAOj7pMXVgI&list=PLdB5_JQvO-7KLUOolEkAjrrhZMJgYWjHt&index=20YouTubeYouTubeYouTube https://www.youtube.com/watch?v=4LuHqhNEKqkYouTubeYouTubeYouTube https://www.youtube.com/watch?v=BQtjZFUyvSAYouTubeYouTubeYouTube https://www.youtube.com/watch?v=L8jU67dOH7kYouTubeYouTubeYouTube https://www.youtube.com/watch?v=qnL63lEceDEYouTubeYouTubeYouTube https://voat.co/v/QRV/3679875
I found a "DUMBS" file on my computer from April 2020 containing many links. Maybe it's useful?
https://sputniknews.com/military/201806251065742558-US-Army-Training-Underground-Combat/
https://popularmilitary.com/us-army-training-soldiers-fight-subterranean-warzones/
https://www.timesofisrael.com/idf-paratroopers-teach-us-marines-lost-art-of-tunnel-combat/
https://taskandpurpose.com/news/army-subterranean-warfare-training
https://mwi.usma.edu/elephant-tunnel-preparing-fight-win-underground/
https://taskandpurpose.com/military-tech/army-robots-subterranean-warfare
http://www.leatherneck.com/forums/showthread.php?60477-Marines-build-warfare-training-city-in-desert
https://mwi.usma.edu/fixing-way-army-trains-urban-warfare/
https://en.wikipedia.org/wiki/Tunnel_warfare
https://smallwarsjournal.com/jrnl/art/swj-book-review-underground-warfare
https://www.lawfareblog.com/fighting-tunnels
https://www.businessinsider.com.au/darpa-underground-spaces-prep-urban-warfare-2019-8?op=1&r=US&IR=T
http://www.thetruthdenied.com/news/2012/12/14/complete-list-of-military-underground-bases-in-usa/
https://qz.com/1175447/north-korea-the-us-army-is-training-to-fight-in-tunnels/
https://www.ausa.org/articles/facing-our-underground-nightmares-casting-light-subterranean-fight
https://www.newsweek.com/us-war-north-korea-tunnels-775209
https://www.defenseone.com/technology/2017/12/pentagon-launches-new-push-tunnel-warfare-tech/144748/
https://military.wikia.org/wiki/Tunnel_warfare
https://defense-update.com/20140727_subterranean_ops.html
https://www.breitbart.com/middle-east/2018/03/14/marines-train-israeli-military-urban-warfare-drill/
https://www.popularmechanics.com/technology/design/g152/strangest-military-bases-gallery/
https://www.fpri.org/article/2015/04/fighting-under-the-earth-the-history-of-tunneling-in-warfare/
https://apps.dtic.mil/docs/citations/ADA620416
https://mwi.usma.edu/underground-warfare-wish-list/
https://global.oup.com/academic/product/underground-warfare-9780190457242?cc=au&lang=en&
https://mwi.usma.edu/war-books-preparing-underground-warfare/
https://www.law.columbia.edu/events/underground-warfare
https://callofduty.fandom.com/wiki/Underground
https://roblox.fandom.com/wiki/Community:Stickmasterluke/The_Underground_War
https://youtu.be/ylkEfC-CoyIYouTubeYouTubeYouTube
https://survivalschool.us/survival-info/military-manuals-pdf/
https://www.reddit.com/r/DrainTheSwamp/comments/8v1xnj/underground_warfare_happening/
DUMBs and Billionaire Bunkers: >
https://www.youtube.com/watch?v=cLy6AXjwQK8YouTubeYouTubeYouTube
https://www.youtube.com/watch?v=4LuHqhNEKqkYouTubeYouTubeYouTube
https://www.youtube.com/watch?v=BQtjZFUyvSAYouTubeYouTubeYouTube
https://www.youtube.com/watch?v=L8jU67dOH7kYouTubeYouTubeYouTube
https://www.youtube.com/watch?v=qnL63lEceDEYouTubeYouTubeYouTube