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Almost three years have passed since the US military announced it would open combat roles to women.
In September, Secretary of Defense Jim Mattis said the jury is still out when it comes to women's performance in these newly integrated units.
Despite women's roles in combat support units that often placed them in the line of fire, the US is one of the last western nations to open positions in infantry, artillery, and special operations to women.
In 2015, the US...