Conscription in Finland is part of a general compulsion for national service in time of crisis (; ) defined in the 127§ of the Constitution of Finland. Conscription can take the form of military or of civilian service. According to Finnish Defence Forces 2011 data slightly under 80% of Finnish males turned 30 had entered and finished the military service. The number of female volunteers to annually enter armed service had been stabilised to 300. The service period is 165, 255 or 347 days for the rank and file conscripts and 347 days for conscripts trained as NCOs or reserve officers. The length of civilian service is always twelve months. Those electing to serve unarmed in the military serve either nine or twelve months, depending on their training.