Project 100,000 – Also known as McNamara’s 100,000, Project 100,000 was a controversial plan to provide remedial training to recruits who could not pass the military’s physical or written aptitude tests. This program was created for two reasons: first to provide men from disadvantaged backgrounds with the training needed for them to succeed in the military and later in civilian life; second to provide more troops for the military to relieve the pressures of the draft quotas. The program was instituted in 1966 and 40,000 men were brought into the military with a goal set of 100,000 men per year after that. The project was accused of being racist because almost 40% of the new standards men, as they became known, were African American and about 75% of all new standards men ended up in the Marine Corps, guaranteeing that a higher percentage of them ended up in combat roles as compared to non new standard men. In 1971 the program ended when Congress stopped basing military quotas on aptitude test scores.
https://www.vietnam.ttu.edu/resources/mcnamara/