The player may eject a Combot's arm by pressing the "Arm" button under the Eject field on the Toolbar shown above.  Combots can attach arms in the field as long as they have an available space for them.  Other parts, such as torsos and legs, can be picked up and brought the Assembly Bay by Hovertrucks where they can be attached to new Combots.  Later Missions allow the player to research captured enemy parts in the Research Facility, which makes the parts become available for production in the Parts Factory.  Combot Crews can also be ejected by clicking on the "Crew" button under the Eject field on the Toolbar.  Crews can pilot any abandoned Combots, including enemy Combots.  Crews will automatically run back to the Assembly Bay unless instructed otherwise.