Gates may be built as part of a Wall. Click on a Wall section to replace it with a Gate. Your units and those of allies ordered to move to the other side of a Gate will automatically open and close the Gate. Enemy troops can not pass through or open a Gate and must destroy it like any wall section to pass through.

Gates were provided in walls to allow access to fortifications. Because Gates could be the most vulnerable part of a defensive position, extra care was taken to make them strong. This might include a long and exposed approach to the gate itself and exposed passageways behind the gate leading to more gates.