Under the Defence Cooperation Programme, the Corps completed many cooperative and collaborative projects with nations in Australia's area of strategic interest. These projects included ground surveys, definition of geodetic datums, air photography, assistance with definition of Exclusive Economic Zones, mapping, provision of equipment and technology transfer and training of officers and technicians. Projects commenced in 1970 in Indonesia and expanded over 25 years to include Solomon Islands, Fiji, Tonga, Kiribati, Nauru, Tuvalu, Vanuatu and Western Samoa. Technical Advisers were posted to national survey and mapping organisations in Fiji, Indonesia, Malaysia, Papua New Guinea, Solomon Islands and Vanuatu.