They Who Dare (1954) - Dirk Bogarde

http://
In Greece during the war a small group of British commandos and patriots
 land on an island, with orders to attack two airfields from
which the Luftwaffe is threatening allied forces in Egypt.
The island is crawling with troops, and even moving
by night the men soon run into trouble.

Starring:
Dirk Bogarde, William Russell,
Kay Callard, Harold Siddons,
Eric Pohlmann, Denholm Elliott,

This movie has a third party claim.
==========================================================