Anyone who stuck his head above the trench parapet for more than a few seconds was shot.

So the Frenchstarted disguisingobservation posts as trees.

Then they taught the British how to do it.

ww1 camouflage-fake trees

Later, the Germans started using them too.

The fake tree had to replace an existing tree.

Adead tree, blasted by a bomb, located ideally near the trenches was chosen.

ww1 camouflage-fake trees

The tree was then photographed and extensively studied, measurements taken and sketches made.

A hollow, steel replica was then made in the workshop far behind the lines.

The artillery fire also drowned out the noise of the work.

ww1 camouflage-fake trees

The tree’s base wassunk intothe ground, and its entrance was concealed.

If a trench was spotted leading up to the tree in aerial photographs it would be a giveaway.

These observation posts were surprisingly successful, and none were detected by the enemy.

ww1 camouflage-fake trees

Plan of dummy tree observation post.

Photo credit: Imperial War Museum

An artist’s sketch.

Photo credit: Imperial War Museum

Construction of dummy tree as observation post.

ww1 camouflage-fake trees

Photo credit: Imperial War Museum

A model of a sectioned observation post with an artillery observer.

Photo credit: Imperial War Museum

Erecting the First Camouflage Tree, 1916, by Solomon.

Photo credit: Imperial War Museum

A canvas and steel tree observation post.

ww1 camouflage-fake trees

Near Souchez, 15 May 1918.

Photo credit: Imperial War Museum

Entrance to a canvas and steel tree observation post.

Near Souchez, 15 May 1918.

ww1 camouflage-fake trees

Photo credit: Australian War Memorial

ww1 camouflage-fake trees

ww1 camouflage-fake trees