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These charts helped US troops identify enemy aircraft during World War II

Mar 17, 2015, 00:06 IST

Distinguishing between friendly and enemy forces can be difficult in war, and World War II posed its own basic battlefield challenges. US soldiers - most of whom were conscripted men who might not have had extensive military experience - needed to be able to quickly recognize their forces' aircraft. This could be a matter of life and death for both soldiers and pilots, as noted by a joint manual from the US War and US Navy Departments issued during the war.

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"The existence of these problems was soon apparent when," the manual notes, "after two months, the casualties of the British Advanced Air Striking Force in France amounted to:- Shot down by the Germans, eight: Shot down by the French, nine."

To help rectify the problem of friendly fire, US soldiers were given the Recognition Pictorial Manuel to help build their knowledge of enemy and friendly aircraft.

Below are the graphical depictions of Allied and Axis planes that US servicemen had to study, in hopes of achieving "the highest general level of proficiency in recognition."

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The pictorial depictions of aircraft were separated into two pages labeled as 'Friend' and 'Foe.'

Each section was then further subdivided to account for the aircraft's countries of origin. Axis aircraft were categorized by aircraft belonging to the Reich, Japan, and Italy while Allied aircraft were divided between the USA and the UK.

Aside from the pictorial representation of the aircraft and their countries of origin, the manual also gives an approximation of the size of each plane. Each box within the charts designates a 100-foot-by-100-foot area. This information allowed US military personnel to be able to better spot and recognize both friendly and enemy aircraft at a time when radar technology was still new and not fully deployed.

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