 The National War Memorial in South Australia became the fourth state World War I memorial to be opened when it was unveiled in 1931. Inglis notes that this is in keeping with the size of the constituency, arguing that "[t] he larger the constituency that each of these collective tributes had to represent, the later it was built". It was unveiled before a crowd of almost 75,000 on Anzac Day, 25 April 1931, (the 16th anniversary of the Gallipoli landing), by the Governor Sir Alexander Hore-Ruthven. The crowd, "as huge a crowd as anyone could remember assembling in the city", was unable to fit in front of the memorial, so many thousands assembled at the Cross of Sacrifice in Pennington Gardens to await a later ceremony. Hore-Ruthven was introduced by the acting state premier, Bill Denny MC, whose involvement in the unveiling, according to Inglis, was unusual for a Labor politician.
