{"id":8562,"date":"2019-11-21T17:10:40","date_gmt":"2019-11-21T17:10:40","guid":{"rendered":"https:\/\/www.theblackvault.com\/documentarchive\/?p=8562"},"modified":"2020-06-15T12:39:55","modified_gmt":"2020-06-15T12:39:55","slug":"subterranean-operations-army-techniques-publication-no-3-21-51-november-2019","status":"publish","type":"post","link":"https:\/\/www.theblackvault.com\/documentarchive\/subterranean-operations-army-techniques-publication-no-3-21-51-november-2019\/","title":{"rendered":"Subterranean Operations, Army Techniques Publication No. 3-21.51, November 2019"},"content":{"rendered":"<h3>Background<\/h3>\n<p>ATP 3-21.51 provides doctrinal guidance and direction for all brigade combat teams (BCTs) and their subordinate elements conducting subterranean operations. The principal audience for ATP 3-21.51 is all members of the profession of arms. Commanders and staffs of Army headquarters serving as joint task force (JTF) or multinational headquarters should also refer to applicable joint or multinational doctrine concerning the range of military operations and joint or multinational forces. Trainers and educators throughout the Army will also use this publication.<\/p>\n<h3>Document Archive<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.theblackvault.com\/images\/pdf.gif\" \/> <a href=\"https:\/\/documents2.theblackvault.com\/documents\/army\/ARN19656_ATP.pdf\">Subterranean Operations, Army Techniques Publication No. 3-21.51, November 2019<\/a> [228 Pages, 17MB]<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Background ATP 3-21.51 provides doctrinal guidance and direction for all brigade combat teams (BCTs) and their subordinate elements conducting subterranean operations. The principal audience for ATP 3-21.51 is all members of the profession of arms. Commanders and staffs of Army headquarters serving as joint task force (JTF) or multinational headquarters should also refer to applicable<\/p>\n","protected":false},"author":1,"featured_media":11470,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"episode_type":"","audio_file":"","transcript_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[5],"tags":[116,1374,1375,617],"class_list":["post-8562","post","type-post","status-publish","format-standard","has-post-thumbnail","category-military-defense","tag-army","tag-military-subterrene","tag-subterranean","tag-underground"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"Background ATP 3-21.51 provides doctrinal guidance and direction for all brigade combat teams (BCTs) and their subordinate elements conducting subterranean operations. The principal audience for ATP 3-21.51 is all members of the profession of arms. Commanders and staffs of Army headquarters serving as joint task force (JTF) or multinational headquarters should also refer to applicable\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"John Greenewald\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.theblackvault.com\/documentarchive\/subterranean-operations-army-techniques-publication-no-3-21-51-november-2019\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.8\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"The Black Vault - Discover the Truth\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Subterranean Operations, Army Techniques Publication No. 3-21.51, November 2019 - The Black Vault\" \/>\n\t\t<meta property=\"og:description\" content=\"Background ATP 3-21.51 provides doctrinal guidance and direction for all brigade combat teams (BCTs) and their subordinate elements conducting subterranean operations. 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Commanders and staffs of Army headquarters serving as joint task force (JTF) or multinational headquarters should also refer to applicable","og:url":"https:\/\/www.theblackvault.com\/documentarchive\/subterranean-operations-army-techniques-publication-no-3-21-51-november-2019\/","og:image":"https:\/\/www.theblackvault.com\/documentarchive\/wp-content\/uploads\/2019\/11\/6-15-2020-5-30-09-AM.jpg","og:image:secure_url":"https:\/\/www.theblackvault.com\/documentarchive\/wp-content\/uploads\/2019\/11\/6-15-2020-5-30-09-AM.jpg","og:image:width":1633,"og:image:height":753,"article:published_time":"2019-11-21T17:10:40+00:00","article:modified_time":"2020-06-15T12:39:55+00:00","twitter:card":"summary_large_image","twitter:title":"Subterranean Operations, Army Techniques Publication No. 3-21.51, November 2019 - The Black Vault","twitter:description":"Background ATP 3-21.51 provides doctrinal guidance and direction for all brigade combat teams (BCTs) and their subordinate elements conducting subterranean operations. 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Commanders and staffs of Army headquarters serving as joint task force (JTF) or multinational headquarters should also refer to applicable","twitter:image":"https:\/\/www.theblackvault.com\/documentarchive\/wp-content\/uploads\/2019\/11\/6-15-2020-5-30-09-AM.jpg"},"aioseo_meta_data":{"post_id":"8562","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2023-04-05 20:37:30","updated":"2025-06-18 23:08:03","seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.theblackvault.com\/documentarchive\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.theblackvault.com\/documentarchive\/category\/military-defense\/\" title=\"Military \/ Defense\">Military \/ Defense<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tSubterranean Operations, Army Techniques Publication No. 3-21.51, November 2019\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/www.theblackvault.com\/documentarchive"},{"label":"Military \/ Defense","link":"https:\/\/www.theblackvault.com\/documentarchive\/category\/military-defense\/"},{"label":"Subterranean Operations, Army Techniques Publication No. 3-21.51, November 2019","link":"https:\/\/www.theblackvault.com\/documentarchive\/subterranean-operations-army-techniques-publication-no-3-21-51-november-2019\/"}],"jetpack_featured_media_url":"https:\/\/www.theblackvault.com\/documentarchive\/wp-content\/uploads\/2019\/11\/6-15-2020-5-30-09-AM.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/posts\/8562","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/comments?post=8562"}],"version-history":[{"count":0,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/posts\/8562\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/media\/11470"}],"wp:attachment":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/media?parent=8562"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/categories?post=8562"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/tags?post=8562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}