| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| A | 
|
Fortress Res 1 | 40 | — | Grants Res+3. Inflicts Atk-3. |
|
Fortress Res 2 | 80 | Fortress Res 1 | Grants Res+4. Inflicts Atk-3. | |
|
Fortress Res 3 | 160 | Fortress Res 2 | Grants Res+5. Inflicts Atk-3. | |
| No restrictions. | |||||
Available as a Sacred Seal.
List of owners[ | ]
| Unit | Skill chain | |||
|---|---|---|---|---|
 | Fortress Res 1 3  | Fortress Res 2 3 | Fortress Res 3 4  | – |
 | Fortress Res 1 5  | Fortress Res 2 5 | Fortress Res 3 5 | – |
 | Fortress Res 1 5 | Fort. Def/Res 1 5 | Fort. Def/Res 2 5 | Stronghold 5 |
 | Fortress Res 1 5 | Fortress Res 2 5 | Fortress Res 3 5 | – |
 | Fortress Res 1 3 | Fortress Res 2 3 | Fortress Res 3 4 | – |
 | Fortress Res 1 5 | Fort. Def/Res 1 5 | Fort. Def/Res 2 5 | Fort. Def/Res 3 5 |
 | Fortress Res 1 3 | Fort. Def/Res 1 4 | Fort. Def/Res 2 5 | – |
Availability[ | ]
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2017-08-15 | 2017-08-31 | New Heroes: The Sacred World | Fortress Res 3 |
| 2017-12-28 | 2018-01-02 | Legendary Heroes - Gunnthrá | Fortress Res 3 |
| 2018-01-31 | 2018-02-05 | Legendary Heroes: Ike | Fortress Res 3 |
| 2018-02-28 | 2018-03-05 | Legendary Heroes - Ephraim | Fortress Res 3 |
| 2018-03-29 | 2018-04-03 | Legendary Heroes - Robin | Fortress Res 3 |
| 2018-05-30 | 2018-06-07 | Legendary Heroes - Ryoma | Fortress Res 3 |
| 2018-08-28 | 2018-09-04 | Legendary Heroes - Marth | Fortress Res 3 |
| 2018-10-17 | 2018-10-29 | Focus: New Power | Fortress Res 3 |
| 2018-10-31 | 2018-11-07 | Legendary Heroes - Eirika | Fortress Res 3 |
| 2018-11-28 | 2018-12-05 | Legendary Heroes - Hríd | Fortress Res 3 |
| 2018-12-23 | 2019-01-06 | Focus: Heroes with Fortress skills | Fortress Res 3 |
| 2019-02-25 | 2019-03-06 | Focus: War of the Tacticians B | Fortress Res 3 |
| 2019-02-27 | 2019-03-06 | Legendary Heroes - Roy | Fortress Res 3 |
| 2019-04-23 | 2019-05-02 | Focus: Heroes with Iceberg | Fortress Res 3 |
| 2019-06-28 | 2019-07-05 | Legendary Heroes - Eliwood | Fortress Res 3 |
| 2019-08-22 | 2019-08-23 | Focus: Heroes with Fortress skills | Fortress Res 3 |
| 2019-08-28 | 2019-09-04 | Legendary Heroes - Julia | Fortress Res 3 |
| 2019-09-29 | 2019-10-06 | Focus: Weekly Revival 17 | Fortress Res 3 |
| 2019-12-04 | 2019-12-11 | Focus: Eirika and Innes's Battle | Fortress Res 3 |
| 2020-02-16 | 2020-02-23 | Focus: Weekly Revival 17 | Fortress Res 3 |
| 2020-02-27 | 2020-03-05 | Legendary Heroes - Chrom | Fortress Res 3 |
| 2020-04-08 | 2020-04-30 | New Heroes: Journey Begins | Fortress Res 3 |
| 2020-06-05 | 2020-06-30 | Book IV Mid: Mirabilis and More | Fortress Res 1 |
| 2020-06-08 | 2020-06-09 | Focus: Heroes with Iceberg | Fortress Res 3 |
| 2020-06-30 | 2020-07-07 | Legendary Heroes - Seliph | Fortress Res 1 |
| 2020-07-05 | 2020-07-12 | Focus: Weekly Revival 17 | Fortress Res 3 |
| 2020-08-14 | 2020-08-15 | Focus: Innes & Eirika's Battle | Fortress Res 3 |
| 2020-08-31 | 2020-09-07 | Legendary Heroes - Corrin | Fortress Res 3 |
| 2020-10-30 | 2020-11-06 | Legendary Heroes - Dimitri | Fortress Res 1 |
| 2021-02-07 | 2021-02-14 | Focus: Weekly Revival 28 | Fortress Res 3 |
| 2021-03-27 | 2021-04-06 | Focus: Healer Royale! Part 2 | Fortress Res 3 |
| 2021-04-28 | 2021-05-07 | Legendary Heroes - Sigurd | Fortress Res 1 |
| 2021-05-13 | 2021-05-20 | Legendary Hero Remix | Fortress Res 3 |
| 2021-10-24 | 2021-10-31 | Focus: Weekly Revival 28 | Fortress Res 3 |
| 2021-10-29 | 2021-11-05 | Legendary Heroes - Fae | Fortress Res 1 |
| 2021-11-13 | 2021-11-20 | Legendary Hero Remix | Fortress Res 3 |
| 2022-03-14 | 2022-03-22 | Legendary Hero Remix | Fortress Res 3 |
| 2022-04-28 | 2022-05-12 | Mythic Heroes - Medeus | Fortress Res 1 |
| 2022-06-26 | 2022-07-03 | Focus: Weekly Revival 28 | Fortress Res 3 |
| 2022-08-13 | 2022-08-27 | Legendary & Mythic Hero Remix | Fortress Res 3 |
| 2022-10-31 | 2022-11-14 | Mythic Heroes - Arval | Fortress Res 1 |
| 2022-11-20 | 2022-11-27 | Focus: Weekly Revival 28 | Fortress Res 3 |
| 2023-01-14 | 2023-01-28 | Legendary & Mythic Hero Remix | Fortress Res 3 |
| 2023-03-13 | 2023-03-27 | Legendary & Mythic Hero Remix 2 | Fortress Res 3 |
| 2023-04-28 | 2023-05-12 | Mythic Heroes - Nerþuz | Fortress Res 1 |
| 2023-07-02 | 2023-07-09 | Focus: Weekly Revival 28 | Fortress Res 3 |
| 2023-07-13 | 2023-07-27 | Legendary & Mythic Hero Remix 1 | Fortress Res 3 |
| 2023-09-11 | 2023-09-25 | Legendary & Mythic Hero Remix 2 | Fortress Res 1 |
| 2024-01-14 | 2024-01-28 | Legendary & Mythic Hero Remix 1 | Fortress Res 3 |
| 2024-03-11 | 2024-03-25 | Legendary & Mythic Hero Remix 2 | Fortress Res 1 |
| 2024-05-24 | 2024-06-14 | Focus: Hall of Forms | Fortress Res 3 |
| 2024-07-11 | 2024-07-25 | Legendary & Mythic Hero Remix 2 | Fortress Res 1 |
| 2024-07-21 | 2024-07-28 | Focus: Weekly Revival 28 | Fortress Res 3 |
| 2024-07-26 | 2024-08-16 | Focus: Double Mythic Heroes | Fortress Res 1 |
| 2024-09-09 | 2024-10-04 | Legendary & Mythic Hero Remix 2 | Fortress Res 3 |
Distributed units
- Kempf: Conniving General (×1)
- Kempf: Conniving General (×2)
- Sonia: Inhuman Beauty (×1)
- Sonia: Inhuman Beauty (×2)
- Use Heroic Grails (×20)
- Use Heroic Grails (×20)
- Grand Hero Battles quest (April 2022) (×1)
- Grand Hero Battles quest (September 2020) (×1)
- Grand Hero Party quest (April 2020) (×1)
- Grand Hero Party quest (August 2021) (×1)
- Grand Hero Party quest (February 2023) (×1)
- Grand Hero Party quest (February 2024) (×1)
- Grand Hero Party quest (October 2021) (×1)
- Resplendent Hero (×1)
Combat Manuals
| Start | End | Hero | Currency |
|---|---|---|---|
| 2021-03-04T03:00:00Z | 2021-04-28T06:59:59Z | Forrest: Fashion Forward | Divine Code: Ephemera 3 |
Seal acquired from[ | ]
Tempest Trials reward[ | ]
- Tempest Trials: Breath of Destiny ( – ): 20,000 Score.
Sacred Seal Forge[ | ]
Fortress Res 1: Create for 20 Great Transparent Badge, 100 Transparent Badge, 20 Sacred Coin.- Fortress Res 2: Enhance for 60 Great Transparent Badge, 200 Transparent Badge, 50 Sacred Coin.
- Fortress Res 3: Enhance for 400 Great Transparent Badge, 1000 Transparent Badge, 100 Sacred Coin.
In other languages[ | ]
| Language | Name |
|---|---|
| Japanese | 魔防の城塞 |
| German | Res.-Festung |
| Spanish (Europe) | Bastión Res |
| Spanish (Latin America) | Bastión Res. |
| French | Forteresse Rés |
| Italian | Forte Res |
| Traditional Chinese (Taiwan) | 魔防堡壘 |
| Portuguese | Fortaleza Res. |