The Belfast Brigade of the Provisional IRA was the largest of the organisation's brigades, based in the city of Belfast, Northern Ireland.

The Falls Curfew, also called the Battle of the Falls, was a British Army operation during 3–5 July 1970 in the Falls district of Belfast, Northern Ireland. The operation began as a search for weapons in the staunchly Irish nationalist district. As the search ended, local youths attacked the British soldiers with stones and petrol bombs and the soldiers responded with CS gas. This quickly developed into gun battles between British soldiers and the Irish Republican Army (IRA). After four hours of continuous clashes, the British commander sealed off the area, which comprised 3,000 homes, and imposed a curfew which would last for 36 hours. Thousands of British troops moved into the curfew zone and carried out house-to-house searches for weapons, while coming under intermittent attack from the IRA and rioters. The searches caused much destruction, and a large amount of CS gas was fired into the area. Many residents complained of suffering abuse at the hands of the soldiers. On 5 July, the curfew was brought to an end when thousands of women and children from Andersonstown marched into the curfew zone with food and other supplies for the locals.