An exploration of friendship forged in the trenches of the First World War during the Gallipoli campaign of 1915–16, in which Allied troops landed on the Gallipoli peninsula in Ottoman Turkey, intent on capturing Constantinople, but which resulted in one of the worst fighting fronts of the war.

Historian Clare Mulley talks to Julia Wheeler about the incredible story of the courageous resistance fighter Elżbieta Zawacka, also known as ‘Elizabeth Watson’ but more often as ‘Zo’ – the only woman to parachute from Britain to Nazi-German occupied Poland during the Second World War.