Human-Sontaran "War"

The Human-Sontaran War was a war between the Humans and the Sontarans. This war lasted only a few days, and ended in a catastrohpic loss for the Sontarans.

The Sontarans attacked Earth by gassing the planet, slowly killing off the populationm, in order to terraform the planet into a breeding ground for Sontaran Clones. However, before the gassing could take place to its full extent, UNIT, a branch of the UNSC, attacked the Sontaran ship with EMP blasts, disabling its defences. However, the Sontarans sent down many ships containing squadrons of Sontarans.

The Humans initially came off worst, as the Sontarans employed emission fields which disabled the human guns. However, some bright spark back at HQ came up with a cunning plan to counteract this - get new guns. After this bright idea the Humans utterly smashed the Sontarans, destroying their attack force with help from the Valiant.

To make matters worse for the Sontarans, their primary battleship was destroyed by the Doctor who flew up and detonated a giant mine that was powered, ironically, by the same gas the Sontarans tried to use to kill off humanity at the start of the war. The Sontaran 'Fleet' was left in ruins, with only one Sontaran surviving the whole conflict, only to crash-land on Earth (he was later found dead in a ditch)