A ceremony to mark the centenary of the Battle of Passchendaele will be held at the cenotaph in Christchurch Park this month.
The battle, officially known as the Third Battle of Ypres began in July 1917, and lasted until November that year.
To commemorate those who lost their lives, a gathering will take place at 7.15am on Monday, July 31.
The Royal British Legion is inviting members of the public to join cadets, veterans and Ipswich mayor Sarah Barber at the memorial, where a solemn gathering will take place.
After 15 minutes a whistle will be blown as they were in 1917, which was the call for troops to go over the top of the trenches and into battle.
The battle has gone down in history as one of the worst for casualties, with 275,000 wounded or killed on the Allied side, while 220,000 victims were recorded on the German and central powers side.
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