some interesting links from that original wiki article posted by fearn. there is one referencing the use of the longbow in ww2 by an english commando officer who used it in an ambush of a german patrol and is the only certified longbow 'kill' of the war. he also carried a claymore into battle.
wiki articles can be starting points for research, as long as accompanied by valid and verifiable external references i see no reason that they should not be used as would any other research based on other forms of documents. some of them
are pretty crappy tho