Between 50 and 60 brigade members and leaders are expected on Sunday for a church parade, morning tea and lunch to celebrate the anniversary at the Eveline Church and Hall.
Bruce Plant has been involved with the company for more than half of that time, initially 28 years ago when his first son, Ewan, joined at 7 years old.
Since then two other sons - Robin and Quintin - have been through the company, all three earning their Queen's Award.
At first, Mr Plant helped out as a volunteer, then became more involved as an officer, culminating about 12 years ago in his promotion to captain and leader of the company.
He is the seventh captain of the company and has maintained his involvement well beyond the last of his sons leaving in the mid-1990s.
"I really enjoy working with young people, particularly with my interest in tramping, climbing and handing on that knowledge of how to survive in the outdoors," he said.
The 2nd Oamaru Company was established in July 1958, initially at St Mary's Church, then at Eveline Church, as it grew. It was one of four Boys Brigade companies in Oamaru.
Now it is the only one left, the others having closed because of a lack of interest.
The first company was at Columba Church and the second was set up when the north end of Oamaru was expanding with new housing. The brigade provided an interest and activities for boys aged between 6 and 18.
Waitaki Boys High School master, the late Gordon Scott, was the instigator, seeing it as a way to teach young people discipline and offering out-of-school activity for pupils, Mr Plant said.
Since its formation, the company has met every Tuesday evening and now has about 20 members. This is less than at its peak, but there is still a lot of interest.
