Complex sentence: The 34th Searchlight Regiment evolved to become the 569th (The Queen's Own) Searchlight Regiment Royal Artillery after the war but, following an amalgamation, the searchlight regiment left the site in 1955.
Split into simpler sentences: The 34th Searchlight Regiment evolved to become the 569th (The Queen's Own) Searchlight Regiment Royal Artillery after the war. Following an amalgamation the searchlight regiment left the site in 1955.