Soldiers to march through Adelaide

About 500 soldiers supported by armoured personnel carriers will march through Adelaide, as the city's council grants them freedom of entry.

The ceremony on Friday will have members of the 1st brigade of the 7th Battalion, Royal Australian Regiment, march from the Torrens Parade Ground to the Town Hall.

Lord Mayor Martin Haese has urged city workers and visitors to take time out from 10.20am to watch the parade and support the soldiers.

"Freedom of entry is a custom dating back to medieval times when military forces were granted permission to enter a city with swords drawn, drums beating and colours flying," he said.

"Without a freedom of entry agreement, which indicates peaceful intent, military forces were often turned away at the city gates."