Complex sentence: The flat grassy plateau at Hawkshill Freedown on the southern edge of Walmer parish adjacent to Walmer Castle was requisitioned in April 1917 by the War Office for use as an aerodrome to increase capability for the defence of shipping in the English Channel.
Split into simpler sentences: The flat grassy plateau at Hawkshill Freedown on the southern edge of Walmer parish adjacent to Walmer Castle. In April 1917 the War Office requisitioned Hawkshill Freedown for use as an Aerodrome to increase capability for the defence of shipping in the English Channel.