The second inter-dale war occurred in 1356 DR when Lord Lashan Aumersair of Scardale invaded a number of other dales. His forces quickly overcame Battledale, Featherdale and Harrowdale, and soon began invading Deepingdale and Mistledale. However, Cormyr, Hillsfar, Sembia and Zhentil Keep were displeased by Lord Lashan Aumersair's intentions, and an alliance was formed, which saw his defeat and the collapse of his "empire".