PBS America (Freeview) Tuesday

Paul Murton crosses the great natural harbour of Scapa Flow to the island of Flotta, before heading round the main Island of Orkney to Stronsay

The Battle of Gettysburg, when for three days in July 1863 150,000 men fought to the death in the Pennsylvania countryside

The series of battles during 1864 that pitted generals Ulysses S Grant and Robert E Lee against each other, from the Wilderness to Petersburg in Virginia

The summer of 1864, when public opinion turned against the conflict before Union victories at Mobile Bay, Atlanta, and the Shenandoah Valley tilted the election to Lincoln

The period following Abraham Lincoln's second inauguration in March 1865, when Petersburg and Richmond fall to General Ulysses S Grant's army

As news of the surrender of the Confederate forces spreads, actor and Confederate sympathiser John Wilkes Booth sought revenge for the South by assassinating President Lincoln

A look at the 1876 battle often referred to as Custer's Last Stand, which saw US army officer George Armstrong Custer's forces defeated by their Native American opponents

Paul Murton crosses the great natural harbour of Scapa Flow to the island of Flotta, before heading round the main Island of Orkney to Stronsay

The story of Carmine Galante, who made money from selling heroin, and still profited from his drug empire while locked in prison