Complex sentence: In the war's aftermath, thousands of memorials were built across Britain; amongst the most prominent designers of war memorials was architect Sir Edwin Lutyens, described by Historic England as "the leading English architect of his generation".
Split into simpler sentences: In the war's aftermath, thousands of memorials were built across Britain. Amongst the most prominent designers of war memorials was architect Sir Edwin Lutyens, described by Historic England as "the leading English architect of his generation".