Night Ambush

Yes , it does come from A Midsummer Night's Dream.

This is because when the operation occurred, the British operators went under the codenames of Oberon, Titania and Ariel for the radio traffic back to Cairo. See Xan Fielding's memoirs as well as Lawrence Durrell's recollections of Paddy Leigh Fermor in Bitter Lemons, his reminiscences of the British campaign against EOKA in Cyprus in the late 50s.

It's not that bad a movie as it absolutely avoids the mawkishness of a propaganda piece and has a semi-documentary feel to it. You must remember there was an entire SS division on the island against which the 5 Britons and about 800 partisans were ranged. It is not so much derring-do as in the vein of The Password is Courage, another excellent true - life drama of Bogarde's.