 Complete the following phrase:  Enkevort was exchanged for a captured Swedish general in 1641, upon his return he was promoted to Generalfeldmarschall by Archduke Leopold Wilhelm of Austria. He then campaigned in Thuringia, between the areas of Aller and Leine. In the spring of 1642, he was again transferred to Lorraine, although this time the Lorraine front saw no major battles prompting his return to Bohemia. Under Leopold Wilhelm, he moved to Saxony, where the Imperial suffered a defeat at the hands of the Swedes in the 