After the Vietnam war experiment "Project 100,000" (aka McNamara's Morons) the IQ level 80 (9 percentile) became the floor for acceptance in Army. https://www.

After the Vietnam war experiment "Project 100,000" (aka McNamara's Morons) the IQ level 80 (9 percentile) became the floor for acceptance in Army. https://www.amazon.com/McNamaras-Folly-Hamilton-Gregory/dp/1495805484 https://www.amazon.com/McNamaras-Folly-Hamilton-Gregory/dp/1... About 10% of people are too cognitively challenged to positively contribute in the US Army even in the least mentally challenging roles. At 80 - 85 IQ level person can typically read basic level. They gradate from schools and comprehend simple texts and sentences but may struggle with more complex language structures, vocabulary, and abstract concepts. People with reading disorders or other disorders should not be confused with low IQ.