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First psychiatric evaluations of soldiers take place during WWI.

1915

MHP
WAR

The evaluations begin as an attempt to screen out those likely to experience "shell shock." Close to two million soldiers are tested for "psychological fitness" and "intelligence," with about 2% being declared "unfit for service." This is a genesis moment in the use of psychological testing in assessing whether a person can join the military and what role(s) they will play once enlisted.