The US Military took over the Grace Building in Sydney during WW2. This building was used as their Base Section 7 Headquarters. 

While in Sydney, Ovid Di Fiore a member of Photo Unit 1, a photographic detachment of the 832nd Signal Service Company would occasionally visit Base Section 7 Headquarters in the Grace Building. Ovid's first recollection of that building was photographing IDs of all civilian employees being hired by the newly established American presence in August 1942. Ovid indicated "This was a great and exclusive opportunity to meet loads of young ladies, Believe me, we made the most of it since we could pick and choose whom we were attracted to and getting plenty of dates!"