After the May Days of 1937, the Government of the Republic dissolved the Catalan-Aragonese army and integrated it into the People's Army of the Republic. The Ascaso Division was then renamed the 28th Division, and the Durruti Regiment was thereafter known as the 125th Mixed Brigade. Throughout 1937, the Brigade contributed to the Huesca Offensive, including an attempt to recover the Alerce station between 12 and 16 June, an important battle that the Republicans lost. They also participated in the Battle of Belchite and the Battle of the Ebro.