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- "To the Twenty-Sixth Royal Tyran Infantry."
"Two-Six RTI. The Unvanquished."
- — Col.Victor Hoffman and Sgt.Bernadette Mataki, toasting the 26th RTI
The 26th Royal Tyran Infantry, the 26th RTI, or the Unvanquished was one of the many battalions of the Coalition of Ordered Governments Army. The 26th's regiment headquarters were located in the Pomeroy Barracks in southern Ephyra. The 26th's most famous members were Marcus Fenix and Carlos Santiago. The 26th fought in the Pendulum Wars, saw combat during the Invasion of Kashkur, several battles along the Sarfuth-Maranday border and during Operation Leveler. One year after Emergence Day, elements of the 26th RTI fought in several battles during the fallback to the Jacinto Plateau. The 26th RTI even had their own regimental museum. 
Invasion of KashkurEdit
Stationed at Tyro and the Battle of ShavadEdit
Siege of Anvil GateEdit
Battle of RaganiEdit
Raid on GraliaEdit
Defending the South IslandsEdit
Four years before E-Day the UIR invaded the South Island of Irohma Island easily defeating the local tribal villagers and massacring the population. Elements of the 26th including Marcus Fenix were sent to defend the island. Marcus encountered a Tai Kaliso and recruited him to join the COG.
Sarfuth-Maranday Border IncidentEdit
Three years before Emergence Day, C Company was stationed along the Sarfuth-Maranday border. They protected an Imulsion pipeline from UIR sabotours from Maranday, one of whom was killed by Pvt.Carlos Santiago.
During Operation Leveler commandos from the unit infiltrated Aspho Point and captured UIR scientists and information on the Hammer of Dawn, while C Company fought at Aspho Fields to cover their escape. During the battle, half of the commandos were killed, as well as the majority of the Gears in C Company, including Major Helena Stroud and Pvt.Carlos Santiago. Several Gears in the unit were awarded various medals for their roles in the operation.
One Year After Emergence DayEdit
One year after Emergence Day the 26th RTI was recalled back to the Jacinto Plateau before the Hammer of Dawn strikes. During the fallback, elements of A Company fought at the Second battle of Jannermont, and reopened the Voslov Bridge. Several squads were later sent out to scout areas that had been hit by the strikes.
At some point after this, the 26th RTI was disbanded, along with most major military units, since the army had become so small. Fifteen years after Emergence Day and shortly after the Sinking of Jacinto, Bernadette Mataki and Victor Hoffman wondered if the 26th RTI would someday be reformed, and toasted the fallen soldiers from the unit.
- Col.Victor Hoffman
- Major.Adam Fenix
- Major.Helena Stroud
- Sgt.Marcus Fenix
- Sgt.Daniel Kennen
- Sgt.Bernadette Mataki
- Sgt.Drew Rossi
- Pvt.Tai Kaliso
- Pvt.Padrick Salton
- Pvt.Carlos Santiago
- Pvt.Dominic Santiago
- Cadet Anya Stroud
- 26 RTI Special Tactics Group
- A Company 26th Royal Tyran infantry
- C Company 26th Royal Tyran infantry
- Howerd Company
- Timgad Company
- ↑ Gears of War: Aspho Fields
- ↑ Gears of War: The Quickening
- ↑ Gears of War: Aspho Fields pg 90
- ↑ Gears of War: Aspho Fields pg 95-107
- ↑ Gears of War: Aspho Fields pg 113-119
- ↑ Gears of War: Aspho Fields pg 163-164
- ↑ Gears of War: Aspho Fields pg 345-346
- ↑ Gears of War: Aspho Fields pg 288-290
- ↑ Gears of War: Aspho Fields pg 318
- ↑ Gears of War: Aspho Fields pg 347-350
- ↑ Gears of War: Jacinto's Remnant pg 130
- ↑ Gears of War: Jacinto's Remnant pg 135-139
- ↑ Gears of War: Jacinto's Remnant pg 276-285
- ↑ Gears of War: Jacinto's Remnant pg 312-323
- ↑ Gears of War: Jacinto's Remnant pg 94