The act of commemoration takes place every day of the year for the Commonwealth War Graves Commission.
Its goal is to preserve more than one million headstones and memorials in 154 countries around the world to commemorate the victims of the First and Second World Wars.
The Tyne Cot Cemetery, near the city of Ypres in Belgium, is home to nearly 12,000 soldiers who fought during the First World War.
"We are probably the biggest gardener in the world," said Commissioner Peter Francis, whose staff was shearing the equivalent of 1,000 football pitches a week.
The gravestones are the same size and are surrounded by uniform lawns and flowers.
The Commission says that all the dead are treated equally, adding that "it does not matter whether you have been killed in action and whether you have received the Victoria Cross or died of flu".
The Commission employs 13,000 people worldwide, many of whom are locals. Four generations of the Jaradah family occupy the Gaza cemetery dating from the First World War.
"I am a son of the cemetery," says Ibrahim, the youngest member of the family. "I grew up with these men."
Meanwhile, a husband and wife team, Shadrack Paull and Lusia Axalte, occupy the Morogoro cemetery in Tanzania.
Ben More Assynt, in northwestern Scotland, is the UK's most remote war graves. In April 1941, an RAF Anson bomber crashed into the mountain, killing all six crew members.
The tomb originally bore a cairn, a pile of stones made by the man, which has deteriorated over time. In 2012, they flew into a new granite marker with the help of a RAF helicopter to replace the original stones.
Continued conflict can make it more difficult to maintain war graves.
However, the commission recently managed to restore hundreds of graves at Habbaniya Military Cemetery, west of Baghdad, Iraq.
In Iraq alone, there are 54,000 war dead.
Yemen, torn by war, is another difficult place. The CWGC has recently been informed of vandalism at the Maala cemetery in the south of the country.
He says he's already made replacement headstones, but is waiting for secure access to the site to make repairs.
Encroachment is another problem. In Nairobi, farmers use the Kariokor cemetery to dry cowhides and sell them.
The CWGC says it is working with local authorities to find a long-term solution.
Although each cemetery has familiar themes about gardens and flowers, there are no two identical sites.
Portland stone is often used for gravestones in large cemeteries in Belgium and France, while in Scotland, granite is often used.
In Turkey, tombs are marked by pedestals rather than gravestones because of the harsher climate.
"Remembrance is always a living and breathing process," says the CWGC.
He recently completed a memorial in Abuja, Nigeria commemorating more than 2,000 Nigerian nationals who lost their lives serving the Commonwealth forces.
All images are copyrighted by the Commonwealth War Graves Commission.