Paras
This being the 70th (!!) anniversary of Arnhem set me thinking - why do we bother to train significant amounts of troops as paras these days?
These days, when every kid over 11 in some parts of the world has an AK-47 and any self respecting war lord can rustle up a few Landcruisers covered in cannon and HMG's plus the odd ManPad, a major parachute attack would literally be shooting fish in a barrel for the defenders.
No doubt there is a place for SF insertion but just about anything else is far better achieved with a helicopter, surely?