The UK is the fifth largest contributor of funds for UN peacekeeping missions (Picture: MOD).
Wreaths were laid at the Cenotaph in London in memory of those who lost their lives while serving as international peacekeepers.
Veterans and a number of personnel currently serving in peacekeeping roles were present, as well as a number of Government representatives.
The UK is the fifth largest contributor of funds for UN peacekeeping missions, and UK Armed Forces personnel are deployed with them across the world - including nations such as Cyprus, South Sudan and the Democratic Republic of the Congo.
Captain Cleo Bigwood, SO3 Gender 77 Brigade, was at the ceremony.
Watch: 'With every conflict, we are now understanding the way in which it affects different gender groups'.
Those who have carried out the work say promoting issues such as gender equality and preventing sexual assaults is becoming more and more important.