The action in Syria included 17 strikes near the cities of Al Raqqah, Dayr az Zawr and Kobani. A variety of Islamic State buildings, fighting positions and units were hit.
In Iraq, 12 strikes targeted Islamic State buildings, fighting positions and units near the cities of Mosul, Fallujah and Sinjar.
Fighters, bombs and remotely controlled aircraft were used against Islamic State, which has taken parts of Syria and Iraq in a bloody campaign to establish an Islamic caliphate.
(Editing by James Dalgleish)