The Battle of Seikigahara River Military Conflict in Edo | World Anvil
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The Battle of Seikigahara River

The biggest bloodbath in the history of the island, The Battle of Seikigahara River lasted only two and a half days and almost all sides suffered massive casualties. The centre of the battlefield, the river itself, ran red with the blood of those who fell in it for days.

The Conflict

Prelude

The Age of Turmoil, the time when almost everybody was at war, had been going on for over 1000 years, and all sides were ready to claim a final victory. This brought the battle to the Seikigahara river, the portion only a few kilometres above Misuto Lake. The conflict was barely for territory, merely to destroy the opposing forces armies, and this was the best location for all sides to meet. The battle officially started the morning of the 4th of Winter, 7592, when Aarakocran troops first attacked the Elvish Army, and from there all sides began to engage.

Battlefield

The battlefield was roughly 10kms on each side, making up a square with the middle being the most shallow part of the Seikigahara river, which is the only part of it that could be crossed by foot by the smaller races (halflings and dwarves). The different armies came from the approximate location of their territory, the goblinoids coming from the North-East, the Humans from the South-West and the Halflings from the South, etc. The terrain was mostly hilly, flattening out around 1km from the river.

Conditions

At the beginning of the battle it was relatively sunny, if a bit cold, and for the first few hours it remained that way, however as more sides met the conditions worsened, culminating in a snowstorm as most sides met knee deep in the river, resulting in the most casualty dense part of the battle.

Outcome

All sides (save for elves and onis) were heavily damaged, their forces for future battles very weakened.

Aftermath

Due to the weakening of the armies of almost all sides, most political leaders were tired of the conflict, hoping to end it in a declared stalemate and resulting peace. This allowed Yuuto Kobayashi to take advantage of this and have all sides declare a temporary peace, before assassinating the leasers and establishing the joint Edo Empire.

Historical Significance

Legacy

Remembered as the most bloody battle in history, it is both admonished for it's needlessness and recognized for it's role in ending the Age of Turmoil. It is part of the education of any citizen who can afford to be taught.
Conflict Type
Battle
Battlefield Type
Land
Start Date
4th of Winter, 7592
Ending Date
6th of Winter, 7592
Conflict Result
Mass casualties all around, elves and humans were the only sides that neither retreated nor wiped out.

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Belligerents

Aarakocran Alliance

Led by

Strength

7000 flying troops, all armed with long range and short range weapons. Split up into 100 man squadrons and 4 man groups within those.

Casualties

5000 before retreat, 200 in the aftermath.

Objectives

Eliminate the human and halfling command in order to create chaos and secure the dwarves a victory. Prevent the elves from reaching the battlefield or stall them long enough that they can have minimal impact.
Human Armies

Led by

Strength

Over 80,000 walking troops, most of whom are equipped with spears, shields, bows, or other pole-arms. About 6000 mounted troops. An additional ~1000 spell casters.

Casualties

22,000 walking troops died alongside most of the mounted troops and about 100 spell casters.

Objectives

A complete victory, with only the elves remaining alongside them, and potentially the halflings.
Dwarvish Clans

Led by

Strength

30,000 ground soldiers, various tamed and trained mountainous monsters.

Casualties

20,000 ground soldiers, most of the monsters

Objectives

Keep the human armies at bay while slaughtering the goblinoids
Goblinoid Clans

Led by

Strength

>100,000 ground soldiers from various goblinoid species. Armed mostly with spears and swords, but there were some other weapons forged from past battles. as the battle progressed more foreign weapons were picked up.

Casualties

~97% of the troops, the survivors retreated back to the forests midway through the battle.

Objectives

Kill the other sides. All of them.
Onis

Led by

Strength

Unknown, anywhere between 100 and 10,000 onis of all varieties

Casualties

Unknown

Objectives

Creat chaos and bloodshed, even out the playingfeild so all sides suffer the most casualties in whatever way possible.

Strength

10,000 ground units, mostly equipped with bows with poisoned arrows and other long range weapons.

Casualties

2,000, the rest retreated.

Objectives

Stay on the edges until the battle is mostly over, then clean up the remaining opposition.
Elvish Army

Led by

Strength

40,000 ground troops, all equipped with bows, swords, and spears for various combat situations. About 10% of them were spell casters.

Casualties

6,000 soldiers in the initial conflict, 2903 within the next month from poison arrow wounds.

Objectives

Quickly destroy the halfling forces then move to the goblinoids. Assist the humans in fighting the Dwarves and Aarakocras after that.

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