Book excerpt: Whitechapel at War: Isaac Rosenberg and his Circle is the first book for almost 20 years to focus on the visual work of poet-painter Isaac Rosenberg. It is also the first to explore his art in the context of his Whitechapel peers, including painters David Bomberg, Mark Gertler, Jacob Kramer, Bernard Meninsky and Clare Winsten, and the writers John Rodker, Joseph Leftwich and Stephen Winsten.