<Tr> <Th> Budget </Th> <Td> $14 million </Td> </Tr> <Tr> <Th> Box office </Th> <Td> $13 million </Td> </Tr> <P> Battle of Britain is a 1969 British Second World War film directed by Guy Hamilton, and produced by Harry Saltzman and S. Benjamin Fisz . The film documented the events of the Battle of Britain . The film drew many respected British actors to accept roles as key figures of the battle, including Sir Laurence Olivier as Hugh Dowding and Trevor Howard as Keith Park . It also starred Michael Caine, Christopher Plummer and Robert Shaw as Squadron Leaders . The script by James Kennaway and Wilfred Greatorex was based on the book The Narrow Margin by Derek Wood and Derek Dempster . </P> <P> The film endeavoured to be an accurate account of the Battle of Britain, when in the summer and autumn of 1940 the British RAF inflicted a strategic defeat on the Luftwaffe and so ensured the cancellation of Operation Sea Lion--Adolf Hitler's plan to invade Britain . The film is notable for its spectacular flying sequences, in contrast with the unsatisfactory model work seen in Angels One Five (1952) and on a far grander scale than had been seen on film before; these made the film's production very expensive . </P>

When was the battle of britain film made