Tensions within the Wentworth Historical Society developed as two competing ideas of where the monument should be situated emerged. The male contingent wanted the monument to stand on the north side of the road, on a knoll where the American invading forces had placed their cannons and where the heaviest fighting during the battle had occurred. The women of the organisation wanted the monument to be located nearer to the House and include a museum.

In the fall of 1895, the ladies of the Wentworth Historical Society took the initiative and began fund-raising drives. One such event was the week long Military Encampment which brought approximately two thousand people a day and raised over one thousand dollars. The lack of a united vision led to a division of the Wentworth Historical Society. In 1899, the women of the Historical Society voted to separate and formed the Women's Wentworth Historical Society. The group spearheaded efforts to have the monument built by purchasing the old Gage homestead for nineteen hundred dollars in 1899. The down payment was one thousand dollars in cash, while the other nine hundred dollars was paid by Sara Calder until the mortgage was obtained through subscription. Sara Calder was not only the president of the Women's Wentworth Historical Society, she was also the great-granddaughter of Mary Jones Gage.

Once the property had been purchased, the organisation refurbished the house in preparation for the official opening of the Battlefield Park and museum. On October 23, 1899 the Battlefield Park was officially opened by Lady Aberdeen. The next great project for the society was the construction of the Battlefield Monument.

In 1900, Fredrick James Rastrick's architectural firm, R. J. Rastrick and Sons submitted a proposal for the monument which was accepted by the Women's Wentworth Historical Society. The estimated cost for the project was $18,715. The Women's Wentworth Historical Society applied to the Federal Government for a grant and received $5,000 in 1908. The ground-breaking ceremony was held on May 28, 1908, and the corner stone was laid by General French on May 26, 1910.

In 1911, during the early phase of construction the Federal Government ended their funding of the project. In 1912, the Department of Militia and Defence stepped in to guarantee the approximately $12,000 needed to complete the construction.

On June 6, 1913, one hundred years after the battle, thousands of people gathered for the unveiling of the monument. People came from Toronto, Buffalo, Hamilton, Grimsby, and Beamsville by the electric railway to attend the ceremony. Queen Mary, who was in London, England at the time, pressed a button which relayed an electric signal through the transatlantic cable unveiled the one hundred twenty four foot monument. Once the monument was unveiled, thousands of people who had gathered to witness the event erupted in applause and cheers.

Eighty years after the unveiling, repairs were desperately required. At a distance, the monument looked the way it did on June 6, 1913, but, on closer examination, one could see the broken windows and unsightly cracks along the inside of the monument. Moreover, the inside of the tower had become a home to dozens of pigeons who covered the monument in their waste. It was estimated the repairs would cost $300,000. The required funds were donated by the Federal and Provincial Governments and the Preserve the Monument Committee. In the summer of 1993, the repairs were completed and the monument was reopened to the public.

The dedication stone at the base of the Battlefield Monument reads:

UNVEILED BY ELECTRICITY JUNE 6TH 1913 BY
HER MAJESTY QUEEN MARY
THIS MONUMENT WAS ERECTED BY THE PEOPLE OF CANADA,
COLONEL THE HONOURABLE SAM HUGHES BEING MINISTER OF MILITIA
AND DEFENCE, TO COMMEMORATE THE BATTLE OF STONEY CREEK JUNE 6TH 1813.
THE BRITISH TROOPS UNDER THE COMMAND OF GENERAL VINCENT AND
LIEUT. COLONEL HARVEY CONSISTED OF THE 49TH REG'T IN COMMAND OF
MAJOR PLENDERLEATH AND FIVE COMPANIES OF THE 8TH KING'S IN
COMMAND OF MAJOR OGILVIE, TO WHICH WAS ADDED THE VOLUNTEER
ASSISTANCE OF THE SETTLERS HEREABOUTS LED BY CAPT. W. H. MERRITT
OF THE CANADIAN MILITIA, THE TOTAL NUMBER BEING ABOUT SEVEN
HUNDRED. THE AMERICAN FORCE NUMBERED UPWARDS OF THREE THOUSAND
UNDER THE COMMAND OF GENERALS CHANDLER AND WINDER.
THEY WERE ENCAMPED IN THIS IMMEDIATE VICINITY WITH STAFF
HEADQUARTERS IN THE GAGE FARM HOUSE, NOW MAINTAINED BY THE WOMEN'S
WENTWORTH HISTORICAL SOCIETY THROUGH WHOSE
REPRESENTATIONS AND UNDER WHOSE DIRECTION THIS
MEMORIAL WAS BUILT.
IN THE DEAD OF NIGHT THE BRITISH ADVANCED FROM BURLINGTON HEIGHTS
AND SURPRISING THE ENEMY, PUT HIM TO CONFUSION.
THIS IS HELD TO HAVE BEEN THE DECISIVE ENGAGEMENT IN
THE WAR OF 1812-13.
HERE THE TIDE OF INVASION WAS MET AND TURNED BY THE
PIONEER PATRIOTS AND SOLDIERS OF THE KING OF
ONE HUNDRED YEARS AGO.
MORE DEADLY THAN THEIR LIVES THEY HELD THOSE PRINCIPLES AND
TRADITIONS OF BRITISH LIBERTY OF WHICH CANADA IS THE INHERITOR.