The number of British soldiers that died in the first world war is 885,000. Over double that of the second world war where a total of 384,000 British soldiers perished.
The first world war British deaths accounted for 6% of the adult male population, and 12.5% of the serving population.
British Military wounded in WWI was over 1.6 million.
Other countries suffered even more, with Russia having the most casualties with 9,150,000. Germany had the most deaths of the first world war with over 1.7 million killed.