The Legionnaire is a medium-sized boarding spacecraft manufactured by Anvil Aerospace for the United Empire of Earth (UEE) military. After the military failed to intervene in a piracy incident that led to the deaths of two civilians in SEY 2918, they issued an all-call for any type of technology that would help improve the success rate of boarding operations. Anvil's submission, a new spacecraft designed by lead engineer Grott Taylor, was ultimately selected and debuted in 2922. The Legionnaire's advanced integrated infiltration system, two-in-one docking collar able to connect to all UEE-standard apertures, and trio of shield generators streamlined the boarding process and decreased the likelihood of accidents. By 2925, the Legionnaire became the centerpiece of the UEE Navy's interception tactics package. A civilian version of the ship entered the market in 2952 during Invictus Launch Week.