Review: REREADING: The last post: More than a million Indian soldiers fought for Britain in the first world war. As the British Library's collection of their letters home is made available online, Daljit Nagra finds a valuable link to the history of his ancestors

'Our people have many lice in their clothes, and they bite terribly. They are worse than a rifle bullet. But there are no mosquitoes or other creatures which bite mankind, [...]