Battle of the Ten Tempests system

In 25 ABY, during the Yuuzhan Vong War between the Yuuzhan Vong species and the New Republic, the Yuuzhan Vong conquered the Ten Tempests system. Ten month after the beginning of the invasion, the Yuuzhan Vong managed to invade Vortex, despite an Adumari flanking attack on Yuuzhan Vong positions.

Appearances

 * The New Jedi Order: Balance Point

Behind the scenes
This battle was first mentioned in the 2000 novel Balance Point as an Adumari [sic] flanking attack on Yuuzhan Vong positions up near Bilbringi. On the other hand, the 2009 guide The New Jedi Order Sourcebook stated that Vortex was invaded by the Yuuzhan Vong by the time of Balance Point. The 2009 guide The Essential Atlas eventually combined those facts in its second map of the Yuuzhan Vong War, revealing that New Republic forces from Adumar attacked the Yuuzhan Vong at Vortex, located in the neighbourhood of Bilbringi.