The War was within the Medusa Cascade and was fought against Davros's New Dalek Empire. Daleks were sent to attack all military installations, such as base in New York where Project Indigo was researched. The Daleks were able to quickly overwhelm the combined Human forces. The Unified Intelligence Taskforce was heavily involved in resisting the Dalek invasion fleet, even sending the Valiant to take on the Daleks although it was destroyed due to the large number of Daleks, with their powerful weapons, that swarmed around the vessel.
After Torchwood 3 had gained control of the Sub-wave network, the Supreme Dalek had a Daleks sent to attack and destroy Torchwood 3. Gwen Cooper and Ianto Jones were left to defend the Hub but the outcome is as of yet unknown.
Sarah Jane Smith also encountered Daleks when she left her home to find the Doctor.