Siege of the North


 * This article is about the battle. For the episodes in which the battle took place, see "The Siege of the North, Part 1" and "The Siege of the North, Part 2".

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- The Water Tribe can try to resist the inevitable, but their city will fall today.

The Siege of the North was a massive battle fought between the Northern Water Tribe and the Fire Nation at the North Pole. The Northern Water Tribe forces, led by Chief Arnook and Avatar Aang, defended the Northern Water Tribe civilization from the besieging navy and infantry of the Fire Nation, led by Admiral Zhao. Thanks mainly to Avatar Aang, the battle ended in a humiliating defeat for the Fire Nation, a vital strategic victory for the Water Tribe and, to a lesser extent, the Earth Kingdom. The outcome of the battle greatly contributed to Iroh and Prince Zuko's becoming Fire Nation fugitives.

Prelude
Many months before the battle, Avatar Aang and his sky bison, Appa, were awoken by Sokka and Katara of the Southern Water Tribe from one hundred years of sleep within an iceberg. After learning that Aang was the Avatar and telling him of the Hundred Year War waged by the Fire Nation, the four befriended each other and together decided to travel to the Northern Water Tribe to find Aang a waterbending master. As the Avatar, Aang had a duty to master the four elements, put an end to the Fire Nation invasion, and so restore peace to the world. After several months of traveling and evading Fire Nation pursuers across the Earth Kingdom, Aang and his friends reached the Northern Water Tribe, and he and Katara began instruction in advanced waterbending.

The ambitious Admiral Zhao, in competition with the exiled Prince Zuko, had been tracking the Avatar across the Earth Kingdom. Realizing Aang's plans to master waterbending at the North Pole, Zhao amassed a huge invasion fleet and, in the footsteps of Fire Lord Sozin before him, sought to eliminate both the Water Tribe and the Avatar in a single blow.

Zhao, after discovering the identity of the treacherous Blue Spirit to be Zuko, secretly ordered his assassination. Unbeknownst to the admiral, Zuko survived and posed as a guard on the admiral's ship, accompanied by Iroh, who took up Zhao's offer to become his military adviser.

Admiral Zhao revealed to Iroh that he had discovered the mortal identity of the Moon and Ocean Spirits years prior the siege, and intended to obtain victory over the Water Tribe by "removing the moon as a factor", as its power gave waterbenders the ability to bend and therefore defend their civilization.

Battle


On a winter morning, Zhao and his Fire Nation Navy armada had arrived at the gate of the Northern Water Tribe. His forces using empire-class battleships, Admiral Zhao attacked by catapulting fireballs from his fleet to break through the icy front wall.

The Water Tribe countered by freezing and destroying Fire Nation ships. Zhao sent a single vessel to blast open the great ice walls defending the city, but this vessel was quickly disabled by Avatar Aang and the waterbenders. Aang decided to fly into battle against the warships, disabling at least a dozen before becoming exhausted by sundown. Meanwhile, Chief Arnook organized a secret mission to eliminate Admiral Zhao by placing his future son-in-law, Hahn, to board the Fire Nation's flagship and capture or kill its commander. The effort turned out to be futile due to the incompetence of the son-in-law to be.

After a day of heavy fire, Iroh advised Zhao to hold fire and resume the invasion the next day, due to the moon augmenting the waterbenders' abilities. After nightfall, Aang entered the Spirit World in an attempt to request the aid of the Moon and Ocean Spirits. However, shortly after entering the Spirit World, Prince Zuko arrived at the Spirit Oasis, and, after defeating Katara, abducted the Avatar and ventured into the isolated tundra.

After daybreak arrived, Zhao resumed fire, within minutes breaching the outer gate of the Water Tribe and deploying a massive amount of infantry, cavalry, and tanks. The battle at this point seemed almost hopeless for the Water Tribe with the Fire Nation advancing rapidly through their defenses.



On the night of the second day, the waterbenders launched their counterattack. Drawing power from the full moon, they advanced toward their enemy invaders and successfully began to destroy their foothold on the beachhead. Realizing the difficult situation, Zhao revealed his plan to kill the Moon Spirit in order to render the waterbenders useless forever.

Aang, meanwhile, had been rescued from Zuko by his friends and had learned the location of the Moon and Ocean Spirits. However, as they were making their way back, Zhao captured the moon spirit from the koi pond, causing a lunar eclipse and rendering the waterbenders powerless as the Fire Nation charged.

Team Avatar later arrived at the pond, where Zhao threatened to kill the Moon Spirit. Aang and Iroh both warned the admiral that doing so would throw the entire world out of balance. Despite this, Zhao struck the Moon Spirit down with a large blast of fire, removing the moon and stripping the waterbenders of their powers.

At this point, Iroh abandoned his allegiance to the Fire Nation and effortlessly struck down Zhao's men, driving Zhao away from the sacred pond. Aang then entered the Avatar State and merged with the Ocean Spirit, who in an act of revenge single-handedly destroyed the invading forces and drove what was left of the Fire Nation fleet away and heavily damaged. Zhao himself was intercepted by Zuko, who wanted revenge for Zhao's previous attempt to murder him.

Initially, the two firebenders fought on equal terms, but Zuko gained the upper hand and overwhelmed the admiral. Before their battle could be concluded, the Ocean Spirit, by this time separated from Aang, dragged Zhao to his death in a watery grave. The Moon Spirit itself was revived by Princess Yue's sacrifice, restoring their bending powers. By this point, the few surviving Fire Nation warships abandoned the siege and retreated from the North Pole.

Aftermath


In the end, the Water Tribe achieved what appeared to be a Pyrrhic victory, having lost many civilians and large amounts of infrastructure. The leaders of the Water Tribe decided to re-open communication with their sister tribe and began their plans of reunifying the tribes. This included sending a team of select healers and waterbenders to rebuild the ravaged Southern Tribe.

Although a tremendous victory, the loss of Zhao's Fire Navy fleet was not enough to end the War, and it was mere weeks after the battle that the Earth Kingdom city of Omashu fell to the enemy. However, the success of this battle ensured that the Northern Water Tribe survived the remainder of the War.

Although the loss of the invading fleet was a huge blow to the Fire Nation, the Fire Navy still maintained its power and most units still remained active, such as the Southern Raiders and their base on Whaletail Island and the blockade defending the Fire Nation.

Fire Lord Ozai was furious about the defeat. Blaming his brother Iroh for its failure, he sent his daughter, Princess Azula, to capture Iroh and Zuko.