Around 600 cadets are taking part in the Sovereign's Day Parade at the Royal Military Academy at Sandhurst.
Of those, 200 of the senior term will be receiving their commissions after a year of hard training.
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The UK drivers' train union ASLEF has offered to suspend next week's strike action. It comes as fresh talks to end the dispute are agreed.
Tuesday afternoon's weather for the east of the region
Tuesday afternoon's weather for the west of the region