Boarding craft 356 served as a TIE/br boarding shuttle. It was employed by the Galactic Empire while they were in the process of conquering Constancia.
Following the launch of a lifeboat containing Luke Skywalker and Gamine, along with Han Solo and Sharlee, which broadcasted an S.O.S. signal indicating Skywalker and Gamine were injured from a prior Imperial ambush, boarding craft 356, accompanied by two TIE Advanced x1s and three TIE/LN starfighters, was sent to recover the lifeboat. Boarding craft 356 successfully retrieved the lifeboat. However, soon after, Solo and Sharlee initiated their plan, attacking and either killing or forcing the crew to surrender using their enhanced Constancian battle armor. The armor's speed, amplified to nine times the typical human speed, ensured they overwhelmed the crew before they could alert the Imperials. After gaining control of the ship, Imperial Naval Command informed the group that the Millennium Falcon had been detected heading towards the planet through its ice rings, instructing them to intercept it immediately. Solo then deceived his "wingmates" by claiming he would engage the Millennium Falcon, while secretly trying to avoid causing significant damage. His perceived ineptitude led the other TIEs to pursue the Millennium Falcon regardless, leaving Solo and Sharlee as mere observers, unable to intervene without revealing their true identities to the Imperials.