War era. Steven Rogers served six months in the U.S. Army. Director Robert Altman served in the Army Air Corps during World War II, flying more than 50 bombing missions as a crewman on a B-24 Liberator in the South Pacific. Morrow's character often displays what appears to be a USMC cover on his helmet; it is actually a scrap from a camouflage parachute used in the D-Day invasion. In May 1962, before filming for the series began, Seligman had the principal cast (Jason, Morrow, Rogers, Jalbert and Greene) go through a week of basic training at the Army's Infantry Training Center at Fort Ord in northern California. "We did everything from crawling under barbed wire with live .50 calibre machine bullets whizzing over our heads, to swinging across a muddy pond on a rope, to pulling the pin on a live grenade and throwing it properly, to running an obstacle course," Jason later wrote. "It was much more than I’d had to do in [World War II] for my real basic training in the Air Corps." Morrow noted that the instructors who worked with the cast at Fort Ord had one common request: not to act like John Wayne. "Poor John," Morrow told a reporter. "I wonder if he knows he's almost a dirty word in the Army." Seligman also asked the Army to assign a technical advisor to review and offer critique of scripts—specifically, someone who had been present at D-Day and subsequent campaigns. The Army complied, assigning Maj. Homer Jones. He served with the 82nd Airborne's 508th Parachute Infantry, parachuted into northern France on D-Day and participated in four campaigns. Jones had access to, and conferred with, Seligman, producer Robert Blees and the show's various directors and technicians to ensure the show was staged accurately. He would also arrange for the show to borrow Army equipment that could not be furnished by the studio's props department. During the battle of Hue during the Vietnam war US troops trying to retake the city, not having been trained in urban combat, resorted to using tactics for assaulting buildings and clearing rooms they learned from watching Combat!, reportedly to great effect. Syndication Combat! has been aired on and off since the 1970s in Greece, Iran, Japan, Mexico, Philippines, Brazil, Guatemala, Nicaragua, Chile, Perú, Indonesia, Colombia, Argentina, South Korea, Canada, Venezuela, Australia, Malaysia, Pakistan, and Taiwan. As of February 2023, the