The Guns of Navarone
The aging mountaineer Gregory Peck who hasn't climbed in 5 years,
The demolitions expert David Niven who is sick of war and killing,
The team leader Anthony Quayle who knows the mission must succeed,
and the tortured Anthony Quinn who vows to kill Gregory Peck as soon as the war is over (which is of course the reason Peck stared in "MacArthur");
plus a few others,
some Greek resistance fighters,
a Greek wedding party,
James Robertson Justice,
and a bunch of Nazis... Now there's a movie!
And to quote John Candy and Joe Flaherty from the "Farm Film Report" on the old SCTV show... "It blowed up real good."