BDA was used during the two Gulf Wars, both during the conflict and retrospectively. In the opening days of the air campaign of the 1991 Gulf War it was used to assess the damage to key Iraqi installations including its nuclear reactors. At the conclusion of the 2003 invasion of Iraq a joint team from the allied nations (including Britain, the United States and Australia) assessed the damage caused to almost 400 sites across the country to determine the effectiveness of weapon strikes.