Refresher training is a form of updating military knowledge of the reservist

Reservist

A reservist is a person who is a member of a military reserve force. They are otherwise civilians, and in peacetime have careers outside the military. Reservists usually go for training on an annual basis to refresh their skills. This person is usually a former active-duty member of the armed...

 troops. After one has completed the conscription

Conscription

Conscription is the compulsory enlistment of people in some sort of national service, most often military service. Conscription dates back to antiquity and continues in some countries to the present day under various names...

 service, he or she can be called for refresher training for some amount of days.

Refresher training in the Finnish Defence Forces

In the Finnish Defence Forces

Finnish Defence Forces

The Finnish Defence Forces are responsible for the defence of Finland. It is a cadre army of 15,000, of which 8,900 are professional soldiers , extended with conscripts and reservists such that the standard readiness strength is 34,700 people in uniform...

 (FDF) Officers

Officer (armed forces)

An officer is a member of an armed force or uniformed service who holds a position of authority. Commissioned officers derive authority directly from a sovereign power and, as such, hold a commission charging them with the duties and responsibilities of a specific office or position...

 and NCOs

Non-commissioned officer

A non-commissioned officer , called a sub-officer in some countries, is a military officer who has not been given a commission...

 can be ordered to refresher training for 100 days in addition to their original military service and the rank

Military rank

Military rank is a system of hierarchical relationships in armed forces or civil institutions organized along military lines. Usually, uniforms denote the bearer's rank by particular insignia affixed to the uniforms...

 and file (privates and other lower ranks) for 75 or 40 days. The amount of refresher training that a reservist is called to depends on the importance of the reservists assignment, deployment

Military deployment

Military deployment is the movement of armed forces and their logistical support infrastructure around the world.-United States:The United States Military defines the term as follows:...

, the amount of special training

Special forces

Special forces, or special operations forces are terms used to describe elite military tactical teams trained to perform high-risk dangerous missions that conventional units cannot perform...

 (i.e. training that requires constant upkeep of skills) 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 to 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

Officer (armed forces)

An officer is a member of an armed force or uniformed service who holds a position of authority. Commissioned officers derive authority directly from a sovereign power and, as such, hold a commission charging them with the duties and responsibilities of a specific office or position...

 and NCOs

Non-commissioned officer

A non-commissioned officer , called a sub-officer in some countries, is a military officer who has not been given a commission...

and at 50 for the lower ranks.