Pulse Carbines were first developed during the Tau Empire’s Campaign of Cleansing from 606.M38 to 792.M38, the first prolonged war of the Tau against the Orks. Whilst the Tau suffered many defeats early on, they were ultimately able to eradicate the Greenskins, thanks in part to the Earth Caste refinement of the first Pulse Weapons. As a result of this campaign, the Dal'yth Sept was successfully founded.