|Source: Lost Lives.|
The memorial window referred to in the news article was installed in the Aberfeldie Methodist Church, Waverley Street, Moonee Ponds, in 1948, commemorating the lives of three of their parishioners: Ormond Frederick Clarke Copas, John Skelton Russell, and Robert William Russell, all of whom died on active service in 1942.
The motto "Valiant for Truth" comes from the Pilgrim's Progress by John Bunyan.
The church closed for worship in 1999, and the buildings are now occupied by Tobin Brothers funeral parlours. It appears that the window was removed before the closure, and inquiries about the location of the window is being made to include in a database of commemorative stained glass windows around Victoria.
If you can shed some light on the whereabouts of this memorial window, please get in touch.