A notice about cookies

This website uses cookies. Some cookies may have been set already. To find out more about our use of cookies you can visit our Privacy policy. By browsing this website, you agree to our use of cookies.


This is a prototype - your feedback will help us to improve it.

Organisation Information

About the Department of Defence

Published: 29 July 2019
From: Department of Defence


The Department of Defence is one of the government departments primarily concerned with ensuring the secure and stable environment necessary for economic growth and development.

The high level goal of the Defence organisation is:

"To provide for the military defence of the State, contribute to national and international peace and security and fulfil all other roles assigned by government."

Sections of the Department

The department is organised in four divisions, each of which is headed by an Assistant Secretary or Director who also oversees governance of the department:

  • Defence Capability (People)
  • Department of Defence Operations Division
  • International Affairs and Legislation
  • Strategic Planning, Capability-Development and Corporate Support Divisions

Further information on management responsibilities can be found at whodoeswhat.gov.ie.


The Head Office of the Department of Defence is located in Newbridge, Co. Kildare. The department also has offices in Galway, Dublin and Tipperary.

Here you will find a list of branches located in the offices of the Department of Defence.

Click the branch name to view details on the workings of that branch:

Corporate Links