After two years of tireless combat against Tilly's and Wallenstein's armies, Dalarna Regiment was returned to Sweden. The rest was not long, however, and in the spring of 1634 the regiment had been supplemented to full strength and Daniel Jonsson was conscripted as lieutenant. In the spring of 1637 he was transferred to Germany with Dalarna Regiment and Mora Company under the command of Lars Carpelan. On 22 October 1642, he participated in the Second Battle of Breitenfeld, which ended with a brilliant victory over the Holy Roman Empire.