Original sentence: A 'scorched earth' policy was implemented in the Chittagong region, nearest the Burmese border, whilst large amounts of rice were exported to the Middle East to feed British troops, and to Ceylon, which had been heavily dependent on Burmese rice before the war, and which was the headquarters of South East Asia Command
Edited sentence: A 'scorched earth' policy was implemented in the Chittagong region, nearest the Burmese border, whilst excessively large amounts of rice were exported to the Middle East to feed British troops, and to Ceylon, which had been heavily dependent on Burmese rice before the war, and which was the headquarters of South East Asia Command