Events are taking place across the country to remember the members of "the forgotten service" - men and women killed in action while working for the Merchant Navy.
During World War Two, the Merchant Navy were a vital link between a cut-off United Kingdom and the rest of the allied forces. They carried food, arms, ammunition, troops and other supplies.
It was highly dangerous work, especially in the Atlantic.
The Merchant Vessels were usually only lightly armed, and were a key target for German U-boats.
One man who signed up to work on a ship aged just 14 remembers putting the danger to the back of his mind.
Donald's local Merchant Navy Association in Dumfries and Galloway has been working tirelessly to mark Merchant Navy Day.
51 red ensign flags are flying throughout the county - the biggest flag showing anywhere in the UK.
You can watch the full interview by Lise McNally below: