Colored aquatint by J. Hill taken from a John Augustus Atkinson piece, as publishedi n 1808 by Wm. Miller in london.
Soldiers eating and drinking near a "suttling" tent near the edge of an encampment.
One immediate thing to note about this piece is the fact that the soldiers are wearing their bayonets and belts on the wrong way. This could either be intentional or due to the mirroring of the print during the engraving process. In general, other Atkinson pieces show the uniform being worn in the correct way.
The soldiers appear to be wearing the wedge style forage caps--a common style until Horse Guards chose a general pattern for the forage cap in the later part of the war years. The soldier standing in the front, turned with his back to the viewer, is wearing overalls. These pants, with buttons running the length of the outer seams, were worn over the breeches. By the later part of the Peninsular campaign, overalls and breeches were replaced by pure trousers ("trowsers").
The soldiers appear to all have their queue--the extended hair style that was abolished by order from the Duke of York in 1808.