Amongst many other books, Macksey wrote a volume of alternate history entitled Invasion, which dealt with a successful invasion of England by Germany in 1940. He also wrote the novel First Clash that describes a NATO–Warsaw Pact clash in the late 1980s and which seems in retrospect to be alternate history, but it was published in 1985 before the purported events of the conflict.
Macksey wrote an alternate history volume called Invasion, detailing a German invasion of England in 1940. Additionally, he penned First Clash, a novel about a NATO–Warsaw Pact conflict from the late 1980s that seems like alternate history now but was published before those events occurred.