In the course of researching his novels, military fiction writer Mack Maloney discovered startling historical records of an increase of UFO sightings near pivotal military events. He discussed a variety of incidents from World Wars I & II, as well as Viet Nam and other battle zones. One of the earliest cases he found dated back to the time of Alexander the Great, when his army was planning a siege on the city of Tyre, and "flying shields" let out a lightning bolt that destroyed one of the city's walls, which allowed Alexander's army to get in. Proceeding WWI, "scareships" were reported by British newspapers in 1909. They were described as dirigible-like craft that emitted huge searchlights and could travel as fast 200 mph.
In World War II, there were reports that crews of allied bombers would see fantastic aircraft flying just 100-200 ft. off their wing. These strange craft, which became known as "foo fighters," would not take action or interfere with the bombings. One of the foo fighters was described as an enormous cigar-shaped, brightly lit craft that flew in formation with the bombers. Incidents such as these led Maloney to theorize that rather than ETs, the UFO occupants were time travelers who came back to observe significant time periods, such as during wars-- to see history as it was being made.
In the "ghost rocket" sightings of 1946, which took place in a remote area of Sweden, hundreds of long tubular objects flying in formation were seen. While they resembled cruise missiles, this was years before that technology was developed, he noted. Maloney also detailed bizarre incidents that took place in Viet Nam, such as when a bright object came down on top of an American base, illuminating the entire area, while all electricity was knocked out; and a UFO that hung over Hanoi for a period of two hours, while the North Vietnamese shot at it to no effect. http://www.coasttocoastam.com/show/2011/12/06