A group of Marine reservists are leading a three-day, 81 mile hike in Florida this weekend to honor those who died in the Battle of Fallujah in 2004. Maj. Charleston Malkemus, an infantry officer who fought in the infamous Battle of Fallujah in Iraq in 2004, carries a flag he received from a Marine who was killed in action. He said he now displays it in his company office to remind other Marines of their commitment to uphold the expectations of their brothers-in-arms. And this weekend, he will carry the flag 81 miles as he helps lead a hike from…