Definitions

Data collection is based on definitions approved by the participating Member States. The Definitions below have been shortened and edited for publication purpose.

Macroeconomic Data: GDP, General Government Expenditure and Population are based on data from Eurostat.
Total defence expenditure is defined as total Ministry of Defence expenditure and defence related expenditure from other sources (other Ministries special budgetary lines).
Civilian personnel: The authorised strength of all civilian personnel on 31 December of each year employed by all military establishments and the armed forces.
Military Personnel: Authorised strengths of all active military personnel on 31 December of each year; includes all personnel in uniform who can operate under military command and can be deployed outside national territory.
Internal Security Military Personnel: gendarmerie-type forces, financed by the MoD budget, but dedicated solely to internal security tasks.
Personnel Expenditure: all personnel-related expenditure for military and civilian personnel, including from non-MoD sources.
Infrastructure: construction of fixed military installations, including country's share in multinationally funded military construction/infrastructure.
Equipment Procurement expenditure includes expenditure for all major equipment categories, that are not included in O&M spending.
Research and Development (R&D) expenditure: any R&D programmes up to the point where expenditure for production of equipment starts to be incurred.
Research and Technology (R&T) expenditure: Subset of R&D – expenditure for basic research, applied research and technology demonstration for defence purposes.
Investment: Equipment Procurement and R&D (including R&T).
Operation and Maintenance (O&M) expenditure: covers O&M (spare parts and supplies) of major equipment; other equipment and supplies; and costs related to maintaining utilities and infrastructure.
Operation Costs are incremental (= extra) costs limited to deployed operations outside the EU Member States territory.
Outsourcing: is defence expenditure for which services have been contracted at the central level with service suppliers from outside the MoD and/or Armed Forces.
Collaboration: agreement by at least two Ministries of Defence for project or programme contracts.
European Collaboration: subset of Collaboration; agreement by at least two EU Member States Ministries of Defence for project or programme contracts. Possible non-EU partners share in such contracts is lower than 50%.
Average number of troops deployed: Average number of troops deployed throughout the year by all EDA participating Member States (All forces)
Deployable (Land) Forces: (Land) Forces troops prepared for deployed operations (the NATO 50% target).
Sustainable (Land) Forces: (Land) Forces troops undertaking or planned for sustained operations (the NATO 10% target).

Note: until 2008 Personnel expenditure had a breakdown: (1) Pay and allowances paid to: military personnel; civilian personnel. (2) Pensions – only if paid directly by the MoD to: retired military personnel; retired civilian employees.