Kyle was a Navy Seal who, during four tours of duty in Iraq, became the most lethal sniper in US military history; he killed at least 160 Iraqis. I remember learning about Kyle's death in 2013, when a fellow veteran (whom he was attempting to help) shot him at a shooting range. I remember thinking that his death seemed a tremendous irony, and I also recall that there was some controversy at the time about the details of his biography.
Over the course of the movie, Kyle begins to question his personal motivation for fighting, which was reminiscent of The Hurt Locker. The way that he prioritized his brothers-in-arms over his wife and family also reminded me of The Hurt Locker.
In terms of the larger geopolitical questions about America's involvement in Iraq, I think Generation Kill raised more questions and better conveyed a sense of moral ambiguity.
599. How many American soldiers have died in Iraq in 2015? I remember that a helicopter was shot down in Afghanistan earlier this year, but have there been any casualties in Iraq?
After watching American Sniper, I was curious about the historical authenticity of the Syrian sniper Mustafa, who Kyle pursues for several years. I gather that there was a sniper who had competed in the Olympics for Syria, but that the interweaving of Kyle and Mustafa's stories was more of a narrative artifice.