Just checked: that is a 1 Inf Div Flash (White Triangle) there might be a coloured strip below it possibly red & blue for RA. A lot of the guys with the trucks have them. Generally worn on duty like the time they guarded POW's at Medjez or did guard duties at Div HQ Sousse. Could of course be Italy but Tunisia is my favourite. They are wearing white webbing, smacks of guard duties or fatigues but after they have finished, not smart enough to be going on duty. Typical TA, Regulars would probably have a BSM down their neck for not getting changed. Must be an unexpected or casual occurrence in or near their own lines justifying the photo. RA wear webbing blanco shade 303 a khaki colour. Any Tropical or KD experts on site. Never served abroad. One day someone will prove me wrong on what & where!