The DIVADs requirement demanded that the entrants be based on the M48 Patton tank chassis , provided by the Army , which were held in large quantities in surplus depots .
Colonel Parker unveiled the DIVAD plan to 49 industry representatives on 18 May 1977 .
The DIVAD requirement demanded that the entrants be based on the M48 Patton tank chassis , provided by the Army , which were held in large quantities in surplus depots .
Colonel Parker unveiled the DIVAD plan to 49 industry representatives on 18 May 1977 .