United Forces

The '''The United Forces is the avatar worlds military peacekeeping force and final line of defense against the worlds enemies

History
During the Equalist attack on Republic City, Tenzin sent word to the United Forces that the city had come under attack. After receiving the tip, the United Forces began traveling toward Republic City via a number of large battleships led by General Iroh.

Three days later, the first division arrived and sailed into the waters of Yue Bay to find very little initial resistance from the Equalists. As they moved closer inland, the ships detonated several mines in the water, designed to explode upon contact. Not long after, a fleet of biplanes invented by Hiroshi Sato attacked the ships from above, launching bombs and other explosives onto the warships before flying away. The firebenders and earthbenders were able to ground several planes with cannons and discs, and General Iroh himself was able to take down two planes before he was knocked into the water by an incoming explosive.

Iroh retreated underground with the help of Avatar Korra, and used Gommu's previous experience as a telegraph operator to send a message to Commander Bumi. He advised the commander not to approach Republic City until he sent him a signal, as none of the naval vessels used by the United Forces were armed to take on Hiroshi's new combat planes. The second division arrived at Air Temple Island shortly after Iroh, Bolin, and Asami destroyed the Equalist air fleet.

Ships and equipment
The United Forces use large fleets of battleships during combat. A first division is led by General Iroh, and a second by Commander Bumi.

Design
Each battleship bears the characteristic insignia of each of the three nations. Battleships have the Earth Kingdom insignia located on their bows, Fire Nation insignias on their cannons, and Water Tribe insignias on the hulls.

Armament
Battleships are armed with several cannons powered by firebenders and equipped with earth discs launched by earthbenders.

List of known commanding officers

 * General Iroh
 * Commander Bumi

Trivia

 * Gommu used to work on the United Forces' ships as a telegraph operator.
 * The Legend of Korra creators Michael DiMartino and Bryan Konietzko have described the United Forces as being the World of Avatar's equivalent to the United Nations of the real world or avatar world global military.