Can the fortresss gate be repaired?
Yes, so long as it is your fortress and the gate has not been completely destroyed. Assign Auxiliary Infantry (or similar) to repair the gate, by selecting them and then clicking on the gate. The unit will attempt to repair the gate to full health and then stop repairs. They will not attend to subsequent damage and must be reassigned each time new repairs are required. Once the gate has been destroyed it cannot be repaired.
