1. N, to create a new alert, from within the Military Alert submenu. Name it Danger.
2. Create burrow in safety zone. Name it Danger.
3. Open alerts, make sure A flag is next to Danger burrow, when Danger alert is highlighted.*
4. When a SIEGE happens, immediately move CIV flag from Inactive alert to Danger alert.
5. Do nothing with Active/Training alert or squads, or the individual squad settings will get broken.
*Player might have to use the arrow keys to get over to that third column, where the Danger burrow is at, to put the A beside the word Danger.