Brigadier-General Reginald Edward Harry Dyer CB (October 9, 1864 – July 23, 1927) was a British Indian Army officer responsible for the Amritsar massacre. Wikipedia
In April 1919, under order of General Dyer, troops opened fire on a crowd at Amritsar, killing 379 unarmed civilians and wounding over a thousand. lachlan.bluehaze.com.au/churchill/amritsar.htm
The definitive Wikipedia entry for Reginald Dyer. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Reginald_Dyer