Yes. I did wonder whether they might have been Swiss troops, but I found exactly the same photo on this website devoted to the Argentine military (scroll down the page a little) - Arms & Replicas, ammunition, magazines and accessories, rifle scopes, - Militariarg.com
Can't tell without their arms in the air.
Is the implication here that either the Argentines or the Swiss are particularly notable for cowardice in battle? If so then may I suggest, Steve, that you do a little more research.
"The German Army is the perfectly adapted, perfectly running Machine. The difference is that the Germans are organised with a view to War...with the cold, hard, practical and business-like purpose of winning victories."
G.W. Steevens - The Daily Mail (1897)
looks like a maxim m1911 but i could be wrong