Anime's action-packed plots feature mighty armies that pose a threat to both heroes and villains alike. Anime's most threatening armies conquer entire planets with their vast resources or include fighters with devastating abilities. Both human forces and those from other species succeed in establishing a reputation for themselves on their worlds' battlefields.

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Successful anime armies wield advanced technology and utilize countless strategies to carry out their respective plans. Even legendary armies that eventually meet their end through a protagonist's allies, wreak enough havoc to impact a world for years to come. Anime armies truly become organizations to be feared for the power at their disposal.

This article contains spoilers from the Attack on Titan manga.

10 The Band Of The Falcon Earns Infamy On The Battlefield (Berserk)

Guts, Griffith, and other cast members from Berserk.

Griffith's Band of the Falcon establish a reputation for themselves for their combat skills and their ability to achieve what other people cannot. The Band of the Falcon's domination of the battlefield earns them acknowledgment by the king of Midland, and the military's respect.

The legendary group benefits from capable leaders like Guts who lead them to victory on nearly every occasion. The Band of the Falcon would've retained their hard-earned noble status if not for Griffith's sudden betrayal. Numerous skilled fighters count themselves within the group's ranks and demonstrate their strength throughout the Hundred-Year War.

9 The Hellsing Organization Combats Supernatural Entities (Hellsing)

Hellsing Original Anime

The secretive Hellsing Organization has the training and resources to successfully fight against vampires and other supernatural entities. The Hellsing Organization possesses ultimate weapons in their control over Alucard and vampire soldiers like Seras Victoria who prove nearly unstoppable on the battlefield.

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Effective leaders like Integra command Hellsing with the proficiency to oppose the Millennium Organization's scientific experiments. Hellsing maintains its ability to fight by recruiting troops from outside the organization to fight on its behalf. Integra's persistence keeps Millennium from eliminating Hellsing as a threat to its plans for war.

8 The Britannian Military Sustains A Global Superpower (Code Geass)

Britannian Military

The Britannian Military's unrivaled advanced technology and loyalty culture ensures the Empire's continued reign as a global superpower. The military organization's use of heavily armed war machines known as Knightmare Frames gives the Empire a major advantage over any opposing enemy force.

Even the Empire's fiercest enemies, like the Black Knights, struggle to contend with the Britannian Military's resources and strength in numbers. The Britannian Military's battle prowess gives the Empire control over an expansive territory and the ability to overpower global organizations like the E.U. Each connected military branch maintains strict organization that allows for quick responses.

7 The Earth Federation Forces Reign Over Space (Mobile Suit Gundam)

Earth Federation

The Earth Federation Forces use futuristic space technology, mechas, and other weapons of mass destruction to counter rebellions against its authority. The Earth Federation's close ties to Earth's wealthiest families give its military substantial funds to increase its power. Though the Earth Federation Force lacks Zeon's technological prowess, it possesses the advantage in level of training.

The Earth Federation Force ultimately wins against the opposing Principality of Zeon and develops strategies to defend against mobile suits. Earth's reigning force maintains its influence for a time despite the immense losses that occur throughout the One-Year War.

6 The State Military Utilizes Advanced Alchemy (Full Metal Alchemist)

Amestris' State Military from Fullmetal Alchemist.

Amestris' State Military's alchemic knowledge and its position at the country's forefront make it one of the world's most prominent military powers. The State Military's collection of alchemic resources and research opportunities enable its State Alchemists to unleash devastating powers against Amestris' enemies.

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The State Military utilizes its scientific expertise to create superhuman chimeras and increase its effectiveness away from public knowledge. Specialized divisions within the organization handle the country's more covert conflicts and ensure the success of its operations. Many of Amestris's most skilled alchemists serve the State Military and its leaders without question.

5 The Paranormal Liberation Front Challenges Hero Society (My Hero Academia)

The League of Villains members upon merging with the Meta Liberation Army in My Hero Academia

The Paranormal Liberation Front poses one of the greatest threats to hero society with the Quirks of both the League of Villains and thousands of dedicated members. The Paranormal Liberation Front's access to All For One's resources and Re-Destro's fortune gives the organization the opportunity to launch devastating attacks across Japan.

Even the top Pro Heroes struggle to defend against the Paranormal Liberation Front's pervasive political influence and propaganda. The organization's public image brings in a stream of new followers that furthers their cause and strengthens their already impressive army.

4 Muzan Kibutsuji's Demons Constantly Threaten Humanity (Demon Slayer)

Akaza, Gyutaro & Daki, three of Demon Slayer's twelve powerful Demon Moons

Demon Slayer's Muzan Kibutsuji holds authority over thousands of demons with supernatural speed and strength. While the weakest demons under Muzan's control commonly fall to Demon Slayers, demons like the Twelve Kizuki fight with a skill unmatched by most humans. Demons' immortality gives them the potential to train for hundreds of years and claim countless victims.

Muzan's continuous creation of new demons ensures that demons remain a threat to humans for thousands of years despite the Demon Slayer Corps' existence. The end of Muzan's reign over his army requires major sacrifices within the Demon Slayer Corps.

3 The Chimera Ants Have The Force To Overtake The World (Hunter X Hunter)

Meruem And His Royal Guards In Hunter X Hunter

The Chimera Ants' multi-species genetics result in an army of creatures with advantageous traits and abilities for survival. Though the lowest-ranking Chimera Ants prove relatively weak, the species' upper echelons possess increasingly formidable power that rivals the world's best Nen users. The Chimera Ants' discovery of Nen turns them into an even more lethal threat against humankind.

King Meruem and his Royal Guards demonstrate the Chimera Ants' full potential with their nearly inconceivable Nen reserves and unstoppable power. The Poor Man's Rose's activation only barely manages to prevent Meruem and his followers from seizing control of humanity.

2 The Rumbling's Wall Titans Devastate Earth (Attack On Titan)

Eren leads the Rumbling in Attack on Titan.

Eren Jaeger's army of Wall Titans possesses enough overwhelming strength and relentless efficiency to decimate Earth and humankind. Each Wall Titan has the potential to kill countless humans through heat generation and the impact of their towering size. The combined power and damage resistance of thousands of Wall Titans creates a nearly unstoppable force for humans to face.

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Though Eren's Wall Titans eventually deactivate due to the loss of those controlling them, the Titan army successfully eliminates 80% of the world's population. The Wall Titan army proves fearsome enough to inflict a cataclysmic event on human history.

1 The Frieza Force Conquers Most Of The Universe (Dragon Ball)

frieza-army

Emperor Frieza's army spans across an entire universe and counts many powerful species among its ranks. The Frieza Force's might maintains control over hundreds of planets through fear and sheer force. Frieza's own extraordinary power and ability to force loyalty among his subjects results in an army with enough strength to nearly drive an advanced species like the Saiyans to extinction.

The Frieza Force possesses the strength and resources to destroy entire planets for simply not being profitable. Frieza and those who fight for him rarely experience failure until the remaining Saiyans choose to fight back.

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