The trees were planted in 1926 and are the only two remaining of a row that was established to join up with Soldiers Memorial Avenue. A plaque was unveiled in front of each by Alec Campbell's widow Kate and Frank MacDonald's great niece Phyllis Gleeson, and organisers Friends of Soldiers Walk and the Hobart City Council.
Mrs Gleeson described the dedication as a "wonderful honour" to her great uncle, Tasmania's last World War I veteran, who died in August aged 107.
Mrs Campbell said that her husband, Australia's last Gallipoli veteran, who died in May last year aged 103, would have been intrigued by the dedication of the trees.
"He'd have wondered what on earth they were doing," she said.
Alec Campbell's great grandson Hugo Hardy, 13, of Hobart, has recorded a reading of Ode To The Fallen to be broadcast nationally on ABC local radio at 11am today.
Premier Jim Bacon and Governor Richard Butler will attend the Remembrance Day wreath-laying ceremony at Hobart's Cenotaph beginning at 10.30am.
A minute's silence will be observed nationwide at 11am, to mark the eleventh hour, of the eleventh day of the eleventh month in 1918, the end of four years' fighting in World War I.
The Launceston service will begin at 10.40am at the cenotaph at Royal Park.
Attendees are asked to lay a single flower or the traditional red poppy instead of wreaths.
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