mossad - best of the best.
would like to say usa because they have the best equipment but unfortunately their soldiers are nerds and rely totally on tech to get any advantage - then lets not talk about the liberal political BS where those idiots want a 'humane' war wtf ??? Take away the tech and the us army is a bunch of wimps with the exception of a few odd soldiers.
lost korea
lost vietnam
lost iraq
lost afghanistan

ffs when has the best funded war machine ever won a damn thing - even japan was wipping your backsides before you used tech in the form of 2 bombs - certainly not something one could say japans surrender was due to the skill of the us forces.