This study became known as the Piquet report. The DGI Working Group submitted its study in March 1967 in which it was concluded that security/intelligence/police should be managed as an entity under a Directorate General Intelligence and Security in the Vice Chief of the Defence Staff (VCDS) Branch. The new Branch was to be named the Security Branch, which officially was created on 1 February 1968. The recommendations of the Piquet Study were implemented by the CDS on 3 May 1967 and by 1968, the Officer specifications were in draft form and included five sub-classifications: Military Police, Investigation, Intelligence, Imagery Interpretation and Interrogation. With the formation of a unified Branch came a need to replace the previous corps and service badges and the use of the thunderbird as the symbol for the Security Branch arose out of the recommendations of the Insignia Steering Group appointed by DGI on 15 May 1967. In 1970, the branch unofficially deleted the Military Police sub-classification at the officer level since the Basic Officer Specifications included all the tasks of the sub-classification. In effect, the Branch had adopted a four subclassification structure. Therefore, between 1971 and 1974, the new Security Services Basic Officer course was the Branch qualifying course and consisted of 84 days devoted to police/security instruction and three days to Intelligence subjects.