From Wikipedia:
As the battles around Saratoga raged, the British, having been pushed back, were being rallied by Brigadier General Simon Fraser. Benedict Arnold [at the height of his pre-treason fame] rode up to General Morgan, pointed at Fraser and told Morgan the man was worth a regiment. Morgan called on Murphy and said: "That gallant officer is General Fraser. I admire him, but it is necessary that he should die, do your duty." Murphy scaled a nearby tree, took careful aim at the extreme distance of 300 yards, and fired four times. The first shot was a close miss, the second grazed the General's horse...From The Man Who Shot Simon Fraser:
...Within a few moments a rifle ball cut the crupper of Fraser's horse, and another passed through his horse's mane. Calling his attention to this, Fraser's aide said, 'it is evident that you are marked out for particular aim, would it not be prudent for you to retire from this place?' Fraser replied, 'my duty forbids me to fly from danger.' The next moment he fell mortally wounded by a ball from the rifle of Murphy and was carried off the field by two grenadiers.And again from Wikipedia:
Fraser tumbled from his horse, shot through the stomach. General Fraser died that night. British Senior officer Sir Francis Clerke, General Burgoyne's chief aide-de-camp, galloped onto the field with a message. Murphy's fourth shot killed him instantly. Murphy also fought at the battle of the Middle Fort in 1780.There appears to be some doubt about who actually shot General Simon Frasier. See: The Man Who Shot Simon Fraser
Looks like I posted that on the wrong thread. Sorry...