SONS OF OUR EMPIRE includes :
The training for the offensive and the bombardment and capture of Bapaume much of it directed by air observation including scenes of a daylight trench raid and in a Vickers machine gun emplacement.
The British battle-cruiser squadron at Rosyth, including HMS Lion and HMS Birmingham and the Royal Naval Air Service at Felixstowe with their early seaplanes and flying boats like the Short 184, the Sopwith Baby and the Curtiss H.2.
A King Edward VII class Battleship firing a broadside, the destroyer HMS Firedrake firing torpedoes and a look at the submarine service: the E.23 sub is loaded with torpedoes, submerges, surfaces and fires her 12-pounder gun. British preparations during the later Somme offensive including the use of Mark 1 female and male tanks, FE2b and FE2d bombers of the Royal Flying Corps, 12-inch ‘Boche Buster’ railway guns, the cavalry and an RE7 observation plane.
The Canadian capture of Courcelatte with howitzers firing their bombardment, Mark 1 tanks moving forward and 13- pounder anti-aircraft guns blasting away as the Canadians go ‘over the top’ and across ‘no man’s land’.
A survey of the wounded, the prisoners and the captured ground from the British Somme offensive