Vincent Trott (Open University) has a couple of recent publications that discuss at some length Richard Aldington, and particularly the publication and reception of Death of a Hero.
Vincent contributed a chapter entitled ‘“The market is getting flooded with them”: Richard Aldington’s Death of a Hero and the War Books Boom’, in The Book World: Selling and Distributing British Literature, 1900-1940 (Brill, 2017). The chapter engages with archival material from the Chatto & Windus archives at the University of Reading. Some complementary material is available in my own monograph.
In Trott’s monograph, Publishers, Readers and the Great War: Literature and Memory since 1918 (Bloomsbury, 2017), the material on Aldington forms part of a longer narrative about the literary representations of the First World War stretching from the conflict to date.