Get Task & Purpose in your inbox Sign up for Task & Purpose Today to get the latest in military news each morning. The war between the United States and Iran has seesawed between open conflict and temporary lulls in hostilities several times since it began on Feb. 28, 2026, but the fighting has never truly ceased. At the same time, Iran has retaliated, striking targets across the region. To date, 18 American service members have died in the conflict. This timeline is an ongoing project and will change as new information comes to light.