Dan explores his great-grandfather's part in the First World War. Lieutenant-General Thomas Snow was a senior officer in the British Army who commanded troops on the first day of the Somme. It was a disaster; thousands of men died for almost no strategic gains, and his legacy would be tarnished forever. But Snow's record is more complicated than that, having proved himself a competent defensive commander earlier in the conflict. So how should we remember the men who presided over catastrophes like the Somme? Were these disasters due to a lack of preparation, failures in leadership, or both?

Dan speaks to Paul Reed, a leading historian of the First World War, to find out more about his great-granddad's wartime service and his complex legacy.

Produced by James Hickmann and edited by Dougal Patmore.

Discover the past on History Hit with ad-free original podcasts and documentaries released weekly presented by world-renowned historians like Dan Snow, Suzannah Lipscomb, Lucy Worsley, Matt Lewis, Tristan Hughes and more. Get 50% off your first 3 months with code DANSNOW. Download the app or sign up here.

We'd love to hear from you! You can email the podcast at ds.hh@historyhit.com.

You can take part in our listener survey here.