 After initial Roman losses, the Marcomanni were defeated in 171, and Marcus Aurelius managed to make peace with some of the tribes along the Danube, including the Quadi.But in 172, he launched a major attack into the territory of the Marcomanni, and then turned on the Quadi, who had been aiding Marcomanni refugees.In a major battle in that year, his troops were almost defeated, until a sudden rainstorm allowed them to defeat the Quadi.