The monolith was erected to commemorate his visit and mark the presence of the Prince in Nagaland, officials said.
After visiting the museum, set up in 2009 by the Nagaland government to convey the message about the futility of violence and war, the Duke shook hands with the World War II veterans here numbering around 12 and gave a patient hearing to the war stories and their problems narrated by them.
"I will see what I can do," the Prince told the veterans, saying "the whole of India holds you in high esteem, and what you did change the course of history. You took a clear stand and nothing can be said more than that, thank you," he commented.
His Kohima visit was part of the Prince