Few venues honor the United States military like Charlotte Motor Speedway and this year's Coca-Cola 600 on Memorial Day weekend could be one of the biggest and most somber yet. 

The track will use troops from all branches of the U.S. Armed Forces as part of the pre-race display. There will be 600 troops apiece from all five military branches _ the Army, Marine Corps, Navy, Air Force and Coast Guard _ who'll march on the 1.5-mile layout prior to the Monster Energy NASCAR Cup Series race. 

The parade will also feature military vehicles including three Humvees, six Howitzers, a HIMARS rocket system, a Marine MTVR vehicle and two Combat Rubber Riding Craft. 

There will also flyovers by F-15 fighter jets and Blackhawk helicopters. The helicopters will have a rappel team. 

Once the race begins, each of the 40 competitors, as in past years, will honor a fallen service member on their windshields. 

NASCAR president Brent Dewar said the sport has always held those who serve in the highest regard and this ceremony will help patrons, fans and the industry "reflect on the sacrafices each (service member) has made for their country."