O.P. Tree – BLDGBLOG
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The Army's special branch: How bizarre fake spy trees appeared in no-man's land during WWI | Daily Mail Online
Chamberlin Neff on Twitter: "Soldiers have always looked outside the box to achieve mission success. Exhibit 1- WWI Soldiers constructed hollow artificial trees of steel and concrete used to allow forward observers
The Journey Of The WW1 Camouflage Tree | Imperial War Museums
Camouflage Trees - WW1 East Sussex
Why Women Pretended to Be Creepy Rocks and Trees in NYC Parks During WWI - Atlas Obscura
Camouflage tree - Wikipedia
Messines Sector, Belgium. 16 February 1918. An observation post, constructed of metal, camouflaged to represent the trunk … | Military diorama, Flanders field, Tree
During WWI in the Trenches, the Trees in No-Mans-Land had Eyes, and Ears | SOFREP
These Fake Trees Were Used as Spy Posts on the Front Lines of World War I | Travel| Smithsonian Magazine
During WWI Fake Trees Were Built To Serve As Observation Posts
The Journey Of The WW1 Camouflage Tree | Imperial War Museums
During WWI fake trees were built to serve as observation posts - 9GAG
Fake Tree Observation Posts of WW1 | Amusing Planet
Why Women Pretended to Be Creepy Rocks and Trees in NYC Parks During WWI - Atlas Obscura
WATCH: How were trees used to kill and spy in WWI? | Al Arabiya English
Fake Tree Observation Posts of WW1 | Amusing Planet
World War I in Photos: Technology - The Atlantic
The Army's special branch: How bizarre fake spy trees appeared in no-man's land during WWI | Daily Mail Online
4 military disguises that were just crazy enough to actually work - We Are The Mighty
