Frederick Booth-Tucker was commissioner to India for the Salvation Army, and the son in law of General William Book, the Army&rsquo;s Founder. &quot;Darkest India&quot;, also known as &quot;Darkest India: A Supplement to General Booth&#39;s <i>In Darkest England, and the Way Out</i>&quot;, was written in 1891 as an introduction of Booth&#39;s &quot;In Darkest England and the Way Out&quot;.<br />&quot;Darkest India&quot; is a philosophical call to arms to improve the abject living conditions of India&rsquo;s poor.