Can you help identify any of these people?

Can you help identify any of these people?

Barry Stinson, President of the Birdwood Military Museum Society asks:

The only person’s name of am aware of is the Gentleman seated 4th from the left  He is John Thomas Clarke. Ex Geraldton Councillor,  and 31 years as leading hand & stationary engine driver at the Western Australian Government Railways condenser, RSL Member who was involved in the Building of Birdwood House the home of the Geraldton City RSL.( Birdwood House opened in 1935)
I would very much like to know if anyone out there can identify any of the other individuals or knows anything about the Honour roll (unveiled September 1916) or photographs behind the group.

Barry can be contacted via: 

Ph: 08 9964 1520

Mobile: 0408 222 653