President Sauli Niinistö, who will participate in the ceremony - which is set to begin at 1 p.m. local time - is to present The Order of the White Rose of Finland medals to 1,803 veterans.
Niinistö will also issue Orders of the Day of the Commander-in-Chief to veterans and members of the women’s voluntary defense.
There are some 26,000 surviving veterans still alive today. The average age of the vets is over 90 years.
The ceremony will be televised live starting at 1 PM on TV1 and afterwards on Yle Areena.