In the Finnish [Defence Forces], Officers and NCOs can be ordered to refresher training for 100 days in addition to their original military service and the rank and file for 75 or 40 days. The amount of refresher training that a reservist is called to depends on the importance of the reservistsassignment, deployment, the amount of special training and willingness. The aim is to train the most important wartime units at intervals of about 5 years. The average duration of the exercises is approximately 5 days and nights. Many never get called for refresher training, some get called frequently and some even apply for voluntary additional training. The obligation for refresher training ends at the age of 60 for Officers and NCOs and 50 for the lower ranks.