Alan Hall and his siblings have a shared story from their childhoods - their mum, Jackie, describes walking through a Liverpool park with her mum, their grandma, Hettie. It must be the 1940s. Hettie is a single mum. She'd fallen pregnant, according to family mythology, while working as a domestic servant in Scotland. Jackie has had spells in foster care. "Don't stare," Hettie says. "Those men over there, they're your uncles."

Years later, after Jackie's death, Alan finds an envelope labelled, 'Mum's Pics'. Inside, there are photographs of two men in military uniforms, one with 'Fred' written on the back, the other, of a soldier in a kilt, 'Brother Bill'. These are Hettie's brothers - or rather, two of them. She was the youngest of nine and the only daughter. Of the other boys, Jackie had told her children, three had been killed in the Great War. A third photograph, of the Foster family gravestone, provides their names - Harry, Sidney and Thomas, "their duty nobly done".

Cannon Fodder traces memory, myth and meaning within one family touched by the catastrophe of World War One.

With contributions from historian Jeremy Banning, Lynelle Howson of the Commonwealth War Graves Commission, retired Salvation Army officers Lt-Cols. David and Doriel Phillips, Ruth Anders of St Anne's Church, Aigburth in Liverpool and Hettie's grandchildren - Cathy, Laureen, Alan and Robin.

With music by Robin's daughter, Leila Hall (voice), and Alan Hall (cornet).