This publication is designed as a basic reference tool for the military intelligence professional. Its purpose is to facilitate research, not to encourage the use of acronyms. The acronyms, words, phrases, and nomenclature found herein are common ingredients of communication in the national-level military environment.
From their website: DIA is the nation’s premier all-source military intelligence organization.
It provides the nation’s most authoritative assessments of foreign military intentions and capabilities. The agency’s four core competencies -- human intelligence, all-source analysis, counterintelligence and technical intelligence -- enable military operations while also informing policy-makers at the defense and national levels.
DIA’s mission is unique and no other agency matches its military expertise across such a broad range of intelligence disciplines.