Wuchak
WW2 jungle warfare
In 1942 the Brits have a base at the southern tip of a Jap-held island in the Philippines; a unit is sent on a mission with an American Lieutenant (Cliff Robertson) to take down the radio at the northern end of the isle. Michael Caine plays a troublesome private while Denholm Elliott is on hand as the leader of the patrol.
In tone and story, Too Late the Hero (1970) is similar to Ambush Bay (1966); other comparable flicks include The Bridge on the River Kwai" (1957) and Beach Red (1967). Of course Kwai is superior, but Too Late aint no slouch.
I had a bad attitude during the first half because of some unrealistic scenes. Im no veteran of jungle warfare, but Im pretty sure you shouldnt be blithely singing so...