Maj. John F. Ohmer, Jr., of the Office of the Chief of Engineers, an expert in camouflage, found that almost nothing had been done to conceal military installations in the US. (Corps of Engineers)

The art and science of camouflage had infatuated Ohmer for years. After joining the Army in 1938, he combined his love of magic and photography to find inventive ways to fool the eye and the lens.

When Ohmer went overseas to study Britain’s wartime concealment efforts, he marveled as German attackers wasted their bombs in open fields brilliantly attired to appear as vital targets. (Popular Mechanics)

During the Battle of Britain, which lasted from July until October 1940, the Luftwaffe rained thousands of bombs over England. One of Germany’s main goals for the constant bombing was to destroy the Royal Air Force.

The Luftwaffe had a long list of important targets that included aircraft factories and airfields. The British covered their factories, warplanes and tanks with camouflaging materials and paint, and put fake airplanes and tanks in fields far away from civilization. The Luftwaffe bombed hundreds of fake targets, leaving the real targets intact. (Mishpacha)

As commander of the Army’s 604th Engineer Camouflage Battalion, Ohmer campaigned to demonstrate his craft by obscuring Hawai‘i’s Wheeler Field in 1941. His superiors rejected his proposal because of the $56,210 price tag (nearly $900,000 today).

Then on December 7, 1941, Japanese attackers bombed and strafed Oahu’s exposed airfields, along with the naval base at Pearl Harbor. Wheeler alone lost 83 warplanes, each one nearly worth the cost of Ohmer’s proposed cover-up. (Popular Mechanics)

Following the attack on Pearl Harbor, Ohmer received an urgent call from the US Army. The threat of further attack led Ohmer’s superiors to reassess the value of his vision.

The most visible and vulnerable targets were a dozen or so distinctive, wooden aircraft assembly buildings. Military leaders were concerned that just a few air-dropped incendiary bombs would burn them to the ground. The loss of just one major airplane-producing facility could lengthen the war considerably. (Popular Mechanics)

Ohmer’s assignment … he had to make everything worth bombing, from San Diego to Seattle, disappear. The long list included airfields, oil depots, aircraft warning stations, military camps, and defensive gun batteries.

“He was a Hollywood art director and designer who worked on classic musicals of the late 1930s, ones with Judy Garland and Mickey Rooney, Nelson Eddy and Jeanette MacDonald and Busby Berkeley choreographed extravaganzas, the kind of movies that lit up the theater.”

“He was an art director at Golden Age MGM, and was nominated for an Oscar in 1940. He married one of the screen’s biggest stars – Veronica Lake. John Stewart Detlie was right at the heart of Tinseltown glamour.” (Cascade PBS)

Ohmer created illusions for America’s five largest aircraft manufacturers situated in California and Washington. These manufacturing plants – from Douglas Aircraft Co., Consolidated Vultee (now Convair), North American Aviation, Lockheed Martin, and Boeing – were transformed to look like cities or towns from the air. (CoffeeOrDie)

Ohmer turned to Hollywood to find the most adept civilian workers, raiding movie studios to leverage the skills of set designers, art directors, painters, carpenters, and landscape artists for the urgent task, along with a handful of willing animators, lighting experts, and prop designers.

The crown jewel of Ohmer’s concealments took place near Seattle, where Boeing’s Plant 2 sprawled over 700,000 square feet of floor space. Inside, thousands of men and women churned out a new B-17 Flying Fortress heavy bomber roughly every 90 minutes.

Ohmer placed his top movie studio recruit on the Boeing project, architect John Detlie. He was pure Hollywood, married to movie star Veronica Lake. Before Detlie joined the war effort, he was an Oscar-nominated art director and set designer at MGM.

In Seattle, Detlie assembled 13 architects and draftsmen, eight commercial artists, seven landscape architects, five engineers, and a soil-management expert.

Thwarting an enemy reconnaissance flier took more than simply covering the factory building. A sharp-eyed scout might zero in on the adjoining airfield, parking lots, or ramp areas. Making Boeing’s entire production facility disappear meant sowing confusion over several square miles of land. (Popular Mechanics)

Located at 7755 East Marginal Way S. in Tukwila on the banks of the Duwamish River, Boeing’s Plant 2 (also known as Air Force Plant 17) was a factory building built in 1936 by The Boeing Company in Seattle, Washington – the factory goal was to build early prototypes of the B-17 Flying Fortress and the Boeing 307 Stratoliners.

By the time of the Japanese attack on Pearl Harbor, the plant had been expanded to 1,776,000 square feet. In total, 6,981 B-17s were produced in Plant 2.

Boeing Plant 2 gave birth to some of the world’s most significant aircraft and a home to ‘Rosie the Riveter’ – women who built thousands of World War II planes.

Plant 2 was so critical that Boeing camouflaged its roof with faux streets and houses of fabric and plywood, making it nearly vanish into nearby neighborhoods. Beneath the plant, tunnels led to cafeterias, restrooms and classrooms, innovations to make life easier for workers and keep them close to their jobs. (Fox)

The idea was to blend the facility into the surrounding neighborhood across the river. This elaborate pretend town was nicknamed the “Boeing Wonderland” by the Seattle Daily Times on July 23, 1945. (RareHistoricalPhotos)

Workers obscured the heart of Boeing’s facility with 26 acres of camouflage netting stretched across the roof to create the appearance of a new faux ground level elevated roughly 50 feet above the surrounding landscape.

The building’s uneven bays and distinctive saw-tooth profile required the netting to be supported by wooden scaffolding or steel cables in low spots.

Reinforced catwalks, sometimes masquerading as sidewalks, included wood and wire handrails to keep a distracted maintenance man from straying off the supported path and plunging through the netting. (Popular Mechanics)

Disguising the active runways and taxiways as an innocuous urban scene called for a two-dimensional solution to not impede aircraft operations. Planners envisioned a pattern of visual noise composed of lawns, buildings, and roads crisscrossing the active airfield.

First, builders mixed finely crushed rock into bitumen, an asphalt-like substance, and applied it to areas heavily trafficked by aircraft. The mixture provided a dull texture to the airfield’s large, flat concrete surfaces. In non-traffic spaces, the men added wood chips and cement to absorb light. (Popular Mechanics)

Over the rough texture, workmen used paint to create an intricate top-down view of a typical neighborhood, devised by Detlie’s crew. Its pigment, developed by Warner Brothers, was reputed to “resist disclosure of the camouflage through infra-red photography.”

Oil mixed with the custom paint helped establish a convincing cross-hatch of artificial roads. On the airport’s infield, men constructed six-inch-high false buildings made from concrete blocks.

From overhead, the small structures cast realistic shadows and gave just a small amount of depth, giving more life to the scene. The finished deception looked amazingly impressive from the “attacker’s-eye-view” at five to ten thousand feet. Only as a pilot came in low for landing did the hidden runway lose its illusion. (Popular Mechanics)

The strange, house-filled neighborhood could be seen in the middle of an industrial area from the air. The “neighborhood” was completed in 1944 and removed a year after the war. (Seattle Times)

Fortunately, the enemy bombers never came. (AirMailNews)

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