I noticed yesterday that one of the Irish Guards who's currently in the media spotlight is wearing two inverted chevrons on the lower left sleeve of his 2s. I know the guards have some rank peculiarities, but I was unaware that the old fashioned system of service chevrons was still in use. Under the old system, two chevrons denoted six years good service, i.e. one chevron for three years' service. Is that what this bloke is wearing?