 The two most notable battles of the War to include Welsh forces were those at Mametz Wood on the Somme and the Battle of Passchendaele.The first quarter of the 20th century also saw a shift in the political landscape of Wales.Since 1865, the Liberal Party had held a parliamentary majority in Wales and, following the general election of 1906, only one non-Liberal Member of Parliament, Keir Hardie of Merthyr Tydfil, represented a Welsh constituency at Westminster.