The plaque will acknowledge the RAAF armourers and other personnel who worked with secret stockpiles of mustard gas in a Glenbrook tunnel from 1942 to 1946.

Federal Member for Lindsay David Bradbury will deliver an address at the unveiling ceremony after the Blaxland-Glenbrook RSL Sub-branch was recently awarded a grant from the Department of Veterans’ Affairs to install the plaque.

Mr Bradbuy has previously acknowledged the Word War II service of these personnel in a speech to Federal Parliament in June 2008.

The Glenbrook ceremony will provide long overdue recognition to the men who worked in the chemical warfare tunnels at various locations around Australia, including a disused railway tunnel at Glenbrook. Many of the personnel associated with the top-secret activity have experienced difficulties in receiving appropriate recognition and compensation for their work despite the risk it posed to their health.

Members of the Blaxland-Glenbrook RSL Sub- branch will conduct both the plaque unveiling and the Remembrance Day ceremony, which will start at 10am.

Blaxland High School students will support the ceremonies with their senior vocal ensemble, bugler and the reading of a poem.