Lohse, 34, went 16-3 with a 2.86 ERA and a 1.09 WHIP last year with the St. Louis Cardinals. He came in 7th in the NL Cy Young award voting.
This move will help bolster the rotation that includes young arms such as Yovani Gallardo, Marco Estrada, and Mike Fiers. His leadership and talent will help improve the Brewers, not only in the rotation, but as a whole.