 Due to local conditions it was sometimes necessary for the Commission to deviate from its standard design . In places prone to extreme weather or earthquakes , such as Thailand and Turkey , stone @-@ faced pedestal markers are used instead of the normal <unk> . These measures are intended to prevent masonry being damaged during earthquakes or sinking into <unk> ground . In Italy <unk> were carved from <unk> <unk> limestone because it was in more plentiful supply . In <unk> Military Cemetery , in Greece , to avoid risk of earthquake damage , small <unk> are laid flat on the ground . The smaller size of the markers mean that they often lack unit insignia . 
