"Our flag represents the history that makes us uniquely Kiwi today. It unites us with the colonial past that forged the pioneering and innovative people that we are today, while celebrating the special connection we have to the sea and the sky," he added, going on to ask who was demanding a new one.
"Where are the people marching on Parliament wanting a change? They don't exist, because we've never been told why change is necessary," he said.
"If we are to have a referendum at all it should be a simple yes or no to our existing flag."
The RSA was preparing a strategy to fight for the existing flag, which would be unveiled after Anzac Day.
"It's our responsibility to lead the charge on behalf of the RSA and also the hundreds of Kiwis who've contacted us to say they don't want the flag to be changed, and do not understand why it has become such a priority," he said. "It is important that people hear the argument in favour of retaining the flag as well as the publicity given to those who want to consider an alternative."