When the First World War ended at 11am on 11 November, 1918, how did army command relay the ceasefire to their troops? In fact, before radios and computer systems, in the early years of the telephone, how were messages passed along trenches at all?In this episode, Don is joined once again by Elizabeth Cobbs, award-winning historian and novelist. Elizabeth's book on this subject is 'The Hello Girls: America's First Women Soldiers'.Produced and edited by Sophie Gee. Senior Producer was Charlotte Long.Enjoy unlimited access to award-winning original documentaries that are released weekly and AD-FREE podcasts. Sign here for up to 50% for 3 months using code AMERICANHISTORYYou can take part in our listener survey here.American History Hit is a History Hit podcast.