A Button?

Tiny, hidden survival tools packed into the waistband of your pants may sound like something fantastical from a spy movie, but in the case of British wartime pilots, they were a reality.

During World War II, the Royal Air Force sent its aviators skyward with all the tools they’d need to complete a mission, along with a few that could help them find their way home if they crash-landed behind enemy lines. One of the smallest pieces of survival gear pilots carried was a compass built into the button of their trousers.  

Three months after entering World War II, the British military launched its MI9 division, a secret intelligence department tasked with helping service members evade enemy forces or escape capture. Between 1939 and 1945, masterminds at MI9 created a variety of intelligence-gathering and survival tools for troops, such as uniform-camouflaging dye, shaped like candy almonds, ultra-compressed medications packed inside pens, and button compasses. The discreet navigational tools were typically made from two buttons, the bottom featuring a tiny needle. When balanced on the spike, the top button acted as a compass that rotated with the Earth’s poles; two dots painted on the metal with luminous paint represented north, and one indicated south.  

MI9 distributed more than 2.3 million of its button compasses during the war. They could be paired with secretive maps that were smuggled to captured service members inside care packages delivered to prisoner-of-war camps. Often printed on silk for durability and waterproofing, the 44 different maps  (sent to different camps based on location) were tucked discreetly into boot heels and board games. The ingenuity worked — by the war’s end, MI9 was credited with helping more than 35,000 Allied soldiers escape and make their way home.

How amazing! How simply amazing!