A lawmaker says the Army will review rec-ords of black World War I heroes to determine whether any were denied high honors because of their race.

The study was initiated after Defense Secretary Frank C. Carlucci acknowledged that racism could have played a role in the awarding of combat medals, Rep. Joseph DioGuardi disclosed in releasing letters from Carlucci and one of his aides.Assistant Defense Secretary Grant S. Green Jr., in a letter released Thursday by the New York congressman, said the review could take more than six months, partly because many records were destroyed in a 1973 fire at the National Personnel Records Center.