Here's the song by Brother Crow "No Money For the Widows", about Willam Stone who was also shot as a coward because, when told by his dying Captain to retreat, jammed his empty rifle across the trench to hamper the German pursuit and was accused of throwing away his weapon. His wife wasn't told he had been executed until she went to claim her widow's pension and was told there was no money for the widows of cowards.

http://www.brothercrow.co.uk/downloads/songs/no_money_for_the_widows.html

It's a great song and a great CD. (That's a beer you owe me Andy and Graeme.)