During a war that took place on the moon Alaris Prime, the Wookiee named Attichitcuk found himself caught in a surprise attack by Battle Droid Beta Versions belonging to the Trade Federation. Attichitcuk, who was the head of a group of Wookiee colonists with official permission to colonize the lunar surface, had embarked on a reconnaissance mission accompanied by two bowcaster troopers to investigate the Trade Federation's presence, as they were illegally attempting to seize control of Alaris Prime.
After discovering the location of some battle droids, the Wookiees started heading towards a base, but they ran into another group of droids that initiated an attack after demanding the Wookiees' surrender. The two troopers were killed, and Attichitcuk sustained serious injuries. However, the chieftain was quickly saved by his son, Chewbacca, and given medical treatment.
Sometime between 39 BBY and 36 BBY, a group of Wookiees, under the leadership of Chieftain Attichitcuk, received legal authorization from the Galactic Senate to establish a colony on the moon known as Alaris Prime. Attichitcuk led these Wookiee colonists, accompanied by his son, Chewbacca, and the Jedi Master Qui-Gon Jinn, to Alaris Prime, where they began the process of colonizing the moon. However, the Trade Federation also desired control of the moon for use as a trade hub and unlawfully established their own competing colony.
On Alaris Prime, both sides were attacked by predatory gundarks, prompting the Wookiees and the Trade Federation to dispatch their forces to the gundark nest with the goal of eliminating them. The Battle Droid Beta Versions of the Trade Federation were the first to reach the nest, and after they had killed all of the gundarks, they launched an attack on Wookiee bowcaster troopers led by Chewbacca. The Wookiees fought back and destroyed all of the battle droids. Following this encounter, Attichitcuk and two Wookiee troopers initiated a scouting expedition into the forests of the moon to gather information about the Trade Federation's activities.
In the meantime, at another base, Chewbacca and Jinn began preparations for future encounters with the Trade Federation by advancing to a new level of technology and collecting various resources. Attichitcuk spotted several battle droids in the area and relayed this information to Jinn. He then proceeded towards the base, ahead of his two companions, unaware that another group of seven Trade Federation Battle Droid Beta Versions was blocking his path.
The battle droids, under the command of DRN-38, forced Attichitcuk to halt, and one of the droids ordered the Wookiee to accompany them. The chieftain refused to comply, which led the battle droids to open fire on Attichitcuk using E-5 blaster rifles. The Wookiee returned fire with his bowcaster, but he was severely wounded by the droids and left for dead. When the other Wookiees caught up to Attichitcuk, they were both shot and killed.
Qui-Gon Jinn, using the Force, sensed that Attichitcuk was still alive and urged Chewbacca to remain calm. Jinn instructed the Wookiees to construct a medical droid at the base's command center and to train at least ten bowcaster troopers before dispatching them and Chewbacca to rescue Attichitcuk. After destroying every battle droid they encountered along the way, the Wookiees reached Attichitcuk and had the medical droid revive the chieftain. They then returned with him to the base, encountering and destroying more battle droids during their journey.
Attichitcuk remained severely injured, which forced Chewbacca to assume his role as the leader of the colonists. Under Jinn's guidance, the Wookiees planned and carried out two major attacks on Trade Federation bases, eventually driving their enemies off the moon permanently with the assistance of a fully recovered Attichitcuk in the Battle for Alaris Prime.
The ambush of Attichitcuk was initially mentioned in the strategy guide by Steven L. Kent—released on November 7, 2001—for the 2001 LucasArts video game Star Wars: Galactic Battlegrounds before being featured in the game itself upon its release on November 11, 2001. The ambush is depicted in the fourth level of the Wookiee tutorial campaign, titled "Researching Technology," as a scripted event that is triggered after the player researches the second technology level, a crucial gameplay mechanic in Galactic Battlegrounds. The player has no ability to influence the outcome of the ambush.