UNMOs' common duties are to:
Monitor the various agreements on cease-fires, withdrawals and demilitarization (including those established in the "safe areas");
Patrol both sides of the conflict (including the areas along the confrontation lines);
Help resolve local difficulties (social, economic, etc.) by liaison with all sides of the conflict.
Investigate allegations of aggression or cease-fire violations.
When conflicts start, UNMOs are the first to go in - but always the last to leave. Their presence often deters attacks, as was the case when shelling stopped in Gorazde, eastern Bosnia-Herzegovina, for the first time in three weeks after eight UNMOs entered the town.