| April 2019 | ||
| 05/04/19 | The alliance DBS (today: SDB) was founded. | |
Founding members::  mesecdana. | ||
 The alliance reaches a population more than 100. | ||
| 08/04/19 | The alliance is now known as SDB. | |
| Joining of:Do3004 and haubica. | ||
| The alliance reaches a population more than 1,000. | ||
| 09/04/19 | Joining of:NaOdmoru. | |
| 13/04/19 | Deletion of:NaOdmoru. | |
| 30/04/19 | Deletion of:mesecdana. | |