I think the first 'badge' could actually be two badges, one above the other. The lower one looks like it could be Light Infantry, possibly KSLI with the top part of the badge obscured.
Just a theory.
The first "badge" looks like two to me also - that being the case would make them quite small - comparing the scale to his own head gear, and comparing to the Scottish cap badges I have. Maybe they are collar titles, and the larger ones behind could be shoulder titles - depending what stage of the war, may be more likely if the bodies they were taken from were wearing tin hats. I wouldn't give a lot for his chances if he got lifted wearing them - same would go for trophy belts and the like.