Congress granted the Army authority to move lower-ranking officers into critical unit positions as part of the 2019 NDAA.
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.
The Heritage Index assessed U.S. military strength across the service branches on a five-tiered scale.
U.S. Army Recruiting Command is reducing its force by roughly 1,700 recruiters over the next year.
Robert Teichgraeber, 100, survived 421 days as a prisoner of war.
By the end of the spring, there will be 294 new naval aviation officers.
Members of II Marine Expeditionary Force wrapped up a training exercise last week that ran from North Carolina to New York.