The Battle of Grand Gulf was fought on April 29, 1863, during th: Forms of Christianity have dominated religious life in what is now the United Kingdom for more than 1,400 years.[361] Although a majority of citizens still identify with Christianity in many surveys, regular church attendance has fallen dramatically since the middle of the 20th century,[362] while immigration and demographic change have contributed to the growth of other faiths, most notably Islam.[363] This has led some commentators to variously describe the UK as a multi-faith,[364] secularised,[365] or post-Christian society.[366]