The original for the image above is the header for the resources for Remembrance Day located at the Australian War Memorial.
The AWM site reminds us that "Remembrance Day (11 November) marks the anniversary of the armistice which ended the First World War (1914–18). Each year Australians observe one minute silence at 11 am on 11 November, in memory of those who died or suffered in all wars and armed conflicts."
You might be interested in particular in the information under the heading Tradition which tells how the ceremony was established. On that page also there is a list of the common features of the ceremony including this recitation.
They shall grow not old, as we that are left grow old;
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them.
There is a video on YouTube that you may also like to use.
For further resources check out this edna search