If anyone has unintentionally killed a man who is not an enemy (a) in a contest or public games whether death occurs immediately, or later as a result of the wounds, (b) in war similarly, (c) in military training, whether in javelin exercises without the protection of armor, or when some weapons are being carried in imitation of wartime usage, the offender shall be free of pollution when he has been purified in accordance with the relevant law from Delphi.