He said the goal is to remove characteristics such as gender, name and racial information to make merit-based decisions.
The move follows Secretary of Defense Esper's guidance to all service branches to stop using photographs in promotion boards.
Investigators interviewed more than 60 witnesses, according to the report obtained by Military.com.
In mid-September, about 350 lieutenant colonels and colonels will go through the Colonel Command Assessment Program.
Defense Secretary Mark Esper said personnel leaders are eyeing options to eliminate unconscious bias from promotion boards.
Vindman was a key witness in President Donald Trump's impeachment inquiry.
The moves are meant to eliminate "discrimination, prejudice and bias in all ranks."
Sen. Duckworth said she would block a promotions list with 1,123 names on it until she had confirmation.
Another military branch is reviewing whether it should do away with promotion photo requirements.
As the years go by, the stakes get higher and sometimes promotions come with more hassle than you want. How do you go about...
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The campaign of President Donald Trump released a letter from 235 retired senior officers backing his re-election.
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