Several hundred National Army troops mount a major operation in Dublin, setting up checkpoints at all major roads in an effort to halt the daily small scale ambushes in the city. They stop and search all in-coming traffic and male civilians for arms. Three men are found carrying weapons and detained. The military barracks at Tallaght, County Dublin is attacked that night. Four Free State soldiers are wounded by gunfire.
Dublin Guard troops end a week of sweeps in Kerry, having raided Rathmore, Killcummin and Barraduff, capturing 39 Anti-Treaty IRA men as well as arms and equipment. A separate sweep in the Currow/Scartaglen area takes another 15 prisoners and 4 more are captured elsewhere in the county.