アメリカ海兵隊（USMC）は、アメリカ合衆国の主要軍種の一つであり、独自の航空・地上アセットを包括的に保有する水陸両用作戦の専門部隊である。行政上は海軍省の傘下に属し、海軍の揚陸艦艇と緊密に連携して世界規模での迅速な遠征展開能力を発揮する。最大の特徴は、F-35B戦闘機やMV-22オスプレイ、JLTVやM142 HIMARSといった空地のアセットを独自の統合タスクフォースとして単独運用できる点にある。近年は「遠征前進基地作戦（EABO）」の思想に基づき、島嶼部における分散型の対艦・防空戦闘能力を強化しており、日本の自衛隊（水陸機動団等）との共同運用思想におけるクロスレファレンス性も極めて高い。
| Personnel (現役兵力・要員数) | Active: 172,300名 / Reserve: 33,600名（※FY2026 NDAA / P.L. 119-60 に規定された公式確定定員枠） |
| Primary Doctrine / Mission (主要ドクトリン・主任務) | 「Force Design」に基づく遠征前進基地作戦（EABO）。沿岸対艦精密射撃ネットワークの構成、および艦隊作戦（Fleet Maneuver）用の偵察・対偵察（RXR）アセットの運用 |
| Primary Threat / Security Environment (想定脅威) | インド太平洋および欧州戦域における中国（PRC）およびロシアの接近阻止・領域拒否（A2/AD）型長距離精密ミサイルシステム、無人航空機システム（UAS）、および徘徊型弾薬（Loitering Munitions） |
| Major Strategic Partners / Main Suppliers (主要な軍事協力・調達国) | Lockheed Martin（F-35B / C）、Oshkosh Defense（NMESIS 運用車台）、BAE Systems（ACV 水陸両用戦闘車）、Raytheon（対艦ミサイル）。統合システム先は米国海軍（US Navy）および太平洋・欧州域の技術的互換アセット |
| Current Modernization Focus (近代化の焦点) | 海兵沿岸連隊（MLR）への構造更新。NMESIS によるトマホーク（Tomahawk）および NSM の沿岸射撃能力拡張、自律型低プロファイル船舶（ALPV）および戦術補給無人機（TRUAS）による分散型ロジスティクス回路の統合 |
銃器・個人装備 (Small Arms)
Semi-automatic Pistol（半自動式拳銃）
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Assault Rifles（突撃銃）・Carbine（カービン）・Battle Rifle（バトルライフル）
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LMG（軽機関銃）・MMG（中機関銃）・GPMG（汎用機関銃）・HMG（重機関銃）
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Shotgun（ショットガン）
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Grenade Launcher（擲弾発射器）
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Sniper Rifle（スナイパーライフル）・Marksman Rifle（マークスマンライフル）・Anti-materiel Sniper Rifle（対物ライフル）
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Recoilless rifle（無反動砲）・Rocket launcher（ロケットランチャー）
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火砲(Artillery)
Mortar（迫撃砲）
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Howitzer（榴弾砲）
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誘導弾(Guided missile)
Anti-tank guided missile（対戦車誘導ミサイル）
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Anti-ship missile (対艦ミサイル)
陸上車両 (Land Vehicles)
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画像の引用元
- アメリカ合衆国海兵隊の紋章 – By U.S. Government – Extracted from the cover of the PDF version of the March 2008 The Navy Reservist (direct PDF URL [1])., Public Domain, https://commons.wikimedia.org/w/index.php?curid=4011106
- アメリカ合衆国海兵隊旗 – By Marine corps flag.gif: Himasaramderivative work: Mnmazur – Own work using: https://web.archive.org/web/20080409112843/http://www.marines.mil/news/publications/Documents/MCO%20P10520.3B.pdf, Public Domain, https://commons.wikimedia.org/w/index.php?curid=6677466
- M7-A soldier fires the M7 during a week-long training event held at Fort Stewart, Georgia, June 20, 2024. Army National Guard photo by Spc. Turner Horton.
Task & Purpose – https://taskandpurpose.com/news/m7-next-generation-squad-weapons/ - M249 SAW-Cpl. Laura Raga – https://www.dvidshub.net/image/1685474, パブリック・ドメイン, https://commons.wikimedia.org/w/index.php?curid=38803304による
- M240B – Public Domain, https://commons.wikimedia.org/w/index.php?curid=584443
- M2 Browning – By Ministério da Defesa – Operação Ágata 11, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=50521004
- SIG SAUER M17 – By Abovfold – Own work, derived from a United States Army photograph which is in the public domain, edited with Adobe Photoshop., Public Domain, https://commons.wikimedia.org/w/index.php?curid=108335519
- SIG SAUER M18 – Vicki Stein – https://www.afimsc.af.mil/News/Article-Display/Article/1770730/afsfc-begins-delivery-of-new-air-force-wide-handgun/, パブリック・ドメイン, https://commons.wikimedia.org/w/index.php?curid=97323448による
- Beretta M9 – Public Domain, https://commons.wikimedia.org/w/index.php?curid=335165
- SIG Sauer P228 / M11 – By US Air Force from USA – M11 Pistol, Public Domain, https://commons.wikimedia.org/w/index.php?curid=56362995
- Glock 19 / M007 – The TWZ Newsletter, https://www.twz.com/wp-content/uploads/message-editor/1510273572315-glock19-1.jpg?strip=all&quality=85
- APC9K / M15 – By PEO Soldier – https://www.army.mil/article/228980/peo_soldier_team_wins_2019_packard_award, Public Domain, https://commons.wikimedia.org/w/index.php?curid=121302338
- M240G – Public Domain, https://commons.wikimedia.org/w/index.php?curid=584443
- M32 MGL / M32A1 MGL (Mk 14 Mod 0) – By Cpl. Michelle Reif – https://www.dvidshub.net/image/1829547, Public Domain, https://commons.wikimedia.org/w/index.php?curid=40931281
- M38 DMR (Designated Marksman Rifle) – Public Domain, https://commons.wikimedia.org/w/index.php?curid=981619
- Mk 153 SMAW (Shoulder-Launched Multipurpose Assault Weapon) – By Lance Cpl. Jacob Snouffer – https://www.dvidshub.net/image/1058834, Public Domain, https://commons.wikimedia.org/w/index.php?curid=39477883
- M224A1 mortar – By U.S. Army photo by Sgt. Jose Lora – This image was released by the United States Army with the ID 260312-A-NE301-3334 (next).This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.العربية ∙ বাংলা ∙Bahaso Jambi ∙Deutsch ∙ Deutsch (Sie-Form) ∙ English ∙ español ∙ euskara ∙ فارسی ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ پښتو ∙ português ∙ русский ∙ slovenščina ∙ svenska ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/−, Public Domain, https://commons.wikimedia.org/w/index.php?curid=189769798
- ACV-P (Amphibious Combat Vehicle – Personnel) – By Lance Cpl. Eadan Avramidis – https://www.dvidshub.net/image/9569657/us-japan-amphibious-tactical-vehicle-landings, Public Domain, https://commons.wikimedia.org/w/index.php?curid=187290939
- ACV-R (Amphibious Combat Vehicle – Recovery) – By U.S. Marine Corps – https://www.marcorsyscom.marines.mil/Portals/105/CorpComDirectorate/BriefstoIndustry/2023/APBI_PEO%20LS_26%20June%202023.pdf?ver=LWHDx3Qam7K6ouf62YmTdw%3D%3D, Public Domain, https://commons.wikimedia.org/w/index.php?curid=162984750
- LAV-25A1/A2/A3 (Light Armored Vehicle) – By U.S. Marine Corps – This image was released by the United States Marine Corps with the ID 021002-M-2706G-003 (next).This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.العربية ∙ বাংলা ∙Bahaso Jambi ∙Deutsch ∙ Deutsch (Sie-Form) ∙ English ∙ español ∙ euskara ∙ فارسی ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ پښتو ∙ português ∙ русский ∙ slovenščina ∙ svenska ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/−, Public Domain, https://commons.wikimedia.org/w/index.php?curid=481476
- LAV-C2 (Light Armored Vehicle – Command and Control) – By Cpl. Dylan Chagnon – https://www.dvidshub.net/image/5226860/1st-lar-marines-conduct-hot-checks, Public Domain, https://commons.wikimedia.org/w/index.php?curid=102895504
- LAV-L (Light Armored Vehicle – Logistics) – By Scott Dunn, U.S. Marine Corps – http://www.marines.mil; VIRIN: 090702-M-9613D-003, Public Domain, https://commons.wikimedia.org/w/index.php?curid=7832505
- LAV-MEWSS / LAV-MEWSS PIP (Mobile Electronic Warfare Support System) – By Cpl. Nayelly Nieves-Nieves – https://www.dvidshub.net/image/7607293/marines-and-sailors-conduct-strait-transit-and-datf-drill-aboard-uss-bataan, Public Domain, https://commons.wikimedia.org/w/index.php?curid=159648479
- LAV-AT (Light Armored Vehicle – Anti-Tank) / LAV-ATM (Light Armored Vehicle – Anti-Tank Modernization) – By Cpl. Diana Jimenez – https://www.dvidshub.net/image/7641487/fuji-viper-232-v34-marines-conduct-tow-missile-range, Public Domain, https://commons.wikimedia.org/w/index.php?curid=162219046
- LAV-M (Light Armored Vehicle – Mortar) – By Sgt. Levi J. Guerra – https://www.dvidshub.net/image/7630524/fuji-viper-232-v34-marines-conduct-operations-with-3d-lar, Public Domain, https://commons.wikimedia.org/w/index.php?curid=159577662
- NMESIS (Navy-Marine Expeditionary Ship Interdiction System) – By U.S. Marine Corps photo by Major Nick Mannweiler – https://media.defense.gov/2021/Aug/18/2002836383/-1/-1/0/210816-M-ZJ571-531.JPG, Public Domain, https://commons.wikimedia.org/w/index.php?curid=109869737
- MTVR MK31/MK32/AMK31/AMK32 (Medium equipment transporter : Tractor Variant) – By U.S. Navy photo by Petty Officer 2nd Class James Hong – This image was released by the United States Navy with the ID 240319-N-VF045-1181 (next).This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.العربية ∙ বাংলা ∙Bahaso Jambi ∙Deutsch ∙ Deutsch (Sie-Form) ∙ English ∙ español ∙ euskara ∙ فارسی ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ پښتو ∙ português ∙ русский ∙ slovenščina ∙ svenska ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/−, Public Domain, https://commons.wikimedia.org/w/index.php?curid=156012402
- LVSR MKR18 (Cargo) – By Lance Cpl. Desire Mora – https://www.dvidshub.net/image/1520567, Public Domain, https://commons.wikimedia.org/w/index.php?curid=39475046
- LVSR MKR16 (Tractor) – By U.S. Marine Corps photo by Lance Cpl. Donald Dugger – This image was released by the United States Marine Corps with the ID 250829-M-FE306-1142 (next).This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.العربية ∙ বাংলা ∙Bahaso Jambi ∙Deutsch ∙ Deutsch (Sie-Form) ∙ English ∙ español ∙ euskara ∙ فارسی ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ پښتو ∙ português ∙ русский ∙ slovenščina ∙ svenska ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/−, Public Domain, https://commons.wikimedia.org/w/index.php?curid=179910165
- LVSR MKR15 (Wrecker) – By https://oshkoshdefense.com/photo-gallery/?category=Vehicles – https://oshkoshdefense.com/photo-gallery/?category=Vehicles, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=52894282
- M1281A1/A2 JLTV-CCWC (Close combat weapons carrier) – By Spc. Georgia Napier – https://www.dvidshub.net/image/7951370/31st-marine-expeditionary-unit-directs-vehicles-during-amphibious-landing, Public Domain, https://commons.wikimedia.org/w/index.php?curid=159932867
- M1161 Growler (Light Utility) – By Pfc. Alvin Pujols – https://www.dvidshub.net/image/1837529/recon-marines-perfect-insertion-capabilities, Public Domain, https://commons.wikimedia.org/w/index.php?curid=178503906
