PBS America (Freeview) Saturday

A look at animals in the Serengeti that seem to be forever at war, competing with each other over territories and ringfencing these areas with scent marking

Looking at some of Europe's secret bunkers, beginning with those built in Europe before and during World War II

Investigating nuclear-era shelters, including the thousands built by a paranoid Romanian leader. Part two of two

Part one of an examination of the events that led to the First World War and how they have triggered every major contemporary conflict since using archive footage

The second of a two-part documentary analysing the events that led to the First World War and how they have triggered every major contemporary conflict since

James Holland and Mike Simpson examine the preparations for the invasion across southern England before crossing the Channel to Normandy. Part one of three

The real fighting begins. James and Mike travel inland, analysing the Canadians’ first encounters with the Waffen SS, in forgotten but vital battles. Part two of three

James Holland and Mike Simpson turn their attention to Operation COBRA and why it was such a strong victory for the Allies. Part three of three

Part one of an examination of the events that led to the First World War and how they have triggered every major contemporary conflict since using archive footage

The second of a two-part documentary analysing the events that led to the First World War and how they have triggered every major contemporary conflict since