Scottish writer Kathleen Jamie composed the poem that appears on a new timber ring crowning the Rotunda monument at the ancient battleground near Stirling.
The National Trust for Scotland and Historic Scotland are working to transform the site where Robert the Bruce defeated the English army in 1314.
Expert carver Richard Douglas from Andrew Miller Architectural Joinery, based in Stirling, began the inscription works in June.
A weather-beaten statue of Robert the Bruce has already been restored and a new visitor centre is planned ahead of the 700th Bannockburn anniversary next year.
Ms Jamie, a professor of creative writing at Stirling University, said: "From the start I wanted this piece of work to make a nod to the Scottish literary tradition and the Scottish landscape, to evoke the deep love of a country that makes one community out of many people."
David McAllister, director of the Battle of Bannockburn project, said: "The designer behind the original Rotunda monument, architect Sir Robert Matthew, planned for it to bear an inscription, and half a century later we have fulfilled this intention. The Rotunda is the central place for commemoration of the Battle of Bannockburn and our intent is to continue that tradition of memorial and contemplation."