Lorry transport on the Somme, September 1916.

Lorry transport on the Somme, September 1916.

Using a trench periscope, Gallipoli, 1915.

Using a trench periscope, Gallipoli, 1915.

Mark I tank, 'C19', 'Clan Leslie', 1916.

Mark I tank, ‘C19’, ‘Clan Leslie’, 1916.

A Sikh soldier in a sandbagged gun emplacement, 1915.

A Sikh soldier in a sandbagged gun emplacement, 1915.

Lewis gunner on the firing step of a trench, 1916.

Lewis gunner on the firing step of a trench, 1916.

A French 75 mm gun in action at Cape Helles, 4 June 1915.

A French 75 mm gun in action at Cape Helles, 4 June 1915.

8-inch howitzers of 135th Siege Battery at La Houssoye, 1916.

8-inch howitzers of 135th Siege Battery at La Houssoye, 1916.

Loading a 15-inch howitzer on the Somme, 7 August 1916.

Loading a 15-inch howitzer on the Somme, 7 August 1916.

British tank amid the ruins of Bapaume...', 1918.

British tank amid the ruins of Bapaume…’, 1918.

Indian Army officers inspecting a railway gun, 1918.

Indian Army officers inspecting a railway gun, 1918.

A Royal Field Artillery 18-pounder battery, 1914 (c).

A Royal Field Artillery 18-pounder battery, 1914 (c).

A column of 18 Pounder QF Mark 1 guns, 1916 (c).

A column of 18 Pounder QF Mark 1 guns, 1916 (c).

The backbone of Marshal Foch's victories', June 1916.

The backbone of Marshal Foch’s victories’, June 1916.

A soldier of the Chinese Labour Corps, France, 1918 (c).

A soldier of the Chinese Labour Corps, France, 1918 (c).

British tank going into action, 10 April 1917.

British tank going into action, 10 April 1917.

Royal Engineers repairing a bridge.

Royal Engineers repairing a bridge.

Royal Engineers bridging a stream, 1917 (c).

Royal Engineers bridging a stream, 1917 (c).

Camouflaged tanks and infantry moving up to the attack, 1917.

Camouflaged tanks and infantry moving up to the attack, 1917.

'V' Beach, Cape Helles, April 1915.

‘V’ Beach, Cape Helles, April 1915.

Royal Buckinghamshire Hussars at Giza, 1916 (c).

Royal Buckinghamshire Hussars at Giza, 1916 (c).

Sappers and miners at work on a tunnel, April 1915.

Sappers and miners at work on a tunnel, April 1915.

Lewis .303 in Mk I light machine gun, 1914. 4 of 4.

Lewis .303 in Mk I light machine gun, 1914. 4 of 4.

Lewis .303 in Mk I light machine gun, 1914. 3 of 4.

Lewis .303 in Mk I light machine gun, 1914. 3 of 4.

Lewis .303 in Mk I light machine gun, 1914. 2 of 4.

Lewis .303 in Mk I light machine gun, 1914. 2 of 4.

Lewis .303 in Mk I light machine gun, 1914. 1 of 4.

Lewis .303 in Mk I light machine gun, 1914. 1 of 4.

Hotchkiss Mk I* M1909 .303 inch light machine gun, 1917.

Hotchkiss Mk I* M1909 .303 inch light machine gun, 1917.

Maxim MG08/15 7.92 mm machine gun 1918 (c).

Maxim MG08/15 7.92 mm machine gun 1918 (c).

Anti aircraft machine gun July 1916.

Anti aircraft machine gun July 1916.

The well camouflaged spotter of enemy batteries', 1917 (c).

The well camouflaged spotter of enemy batteries’, 1917 (c).

French machine-gunner on the Champagne Front, 1915.

French machine-gunner on the Champagne Front, 1915.

Lt Rosser give M.G. instruction to Lt Silk.

Lt Rosser give M.G. instruction to Lt Silk.

An enemy blockhouse seized at Poelecappelle, 1917.

An enemy blockhouse seized at Poelecappelle, 1917.

Mark II tanks, 1917.

Mark II tanks, 1917.

British gunners take a break, Zonnebeke, 1917 (c).

British gunners take a break, Zonnebeke, 1917 (c).

Naik Shahamad Khan manning a machine gun, 1916 (c).

Naik Shahamad Khan manning a machine gun, 1916 (c).

A machine gunner at Sannaiyat, April 1916.

A machine gunner at Sannaiyat, April 1916.

Drawing rations from the railhead, Ecuires, 28 June 1917.

Drawing rations from the railhead, Ecuires, 28 June 1917.

Soldiers marching through Birmingham train station, 1914.

Soldiers marching through Birmingham train station, 1914.

The well camouflaged spotter of enemy batteries', 1917 (c).

The well camouflaged spotter of enemy batteries’, 1917 (c).

Aeroplane starting on reconnaissance. July 1916.

Aeroplane starting on reconnaissance. July 1916.

A Hun airman with a good war record.

A Hun airman with a good war record.

A Royal Aircraft Factory RE8 reconnaisance aircraft.

A Royal Aircraft Factory RE8 reconnaisance aircraft.

Troops and supplies, 1914.

Troops and supplies, 1914.

A column of Mosquito tanks, 1917.

A column of Mosquito tanks, 1917.

Benbow 2nd Tank Bn Hit. Sept: 1917 - Clapham Junction

Benbow 2nd Tank Bn Hit. Sept: 1917 – Clapham Junction

Protective face mask for tank crew, 1917 (c).

Protective face mask for tank crew, 1917 (c).

Mark IV female captured late December 1917'.

Mark IV female captured late December 1917′.

British Mark IV female tank during trials, 1917.

British Mark IV female tank during trials, 1917.

A tank comes to the rescue of its comrade...', 9 August 1918.

A tank comes to the rescue of its comrade…’, 9 August 1918.

Mk 1 tank during training at Elveden, Suffolk, 1916.

Mk 1 tank during training at Elveden, Suffolk, 1916.

Mark I tank and infantry, 1916 (c).

Mark I tank and infantry, 1916 (c).

A British Army wiring party, 1917 (c).

A British Army wiring party, 1917 (c).

A Lewis Gun, 18 March 1918.

A Lewis Gun, 18 March 1918.

Our whippet tanks penetrate the German lines at Morcourt, 1918.

Our whippet tanks penetrate the German lines at Morcourt, 1918.

British Whippet tank, 1918.

British Whippet tank, 1918.

Lewis Gun in action against aircraft.

Lewis Gun in action against aircraft.

Sapper Harold Wilbert, RE Despatch Rider, 1917 (c).

Sapper Harold Wilbert, RE Despatch Rider, 1917 (c).

British and Allied soldiers with a captured tank, 1918.

British and Allied soldiers with a captured tank, 1918.

Entrenching tool, with War Department marks, 1915.

Entrenching tool, with War Department marks, 1915.