Mlb63, believe it or not Too Late the Hero was on the ACTN channel this morning. Let's see if any of this jogs your memory. Cliff Robinson played a U.S. Navy Lt, lefttenant to you, who was pretty much a coward but got trapped into going on a mission with some British soldiers. Michael Caine played a cockney, like my mum, who was a medic and a real trouble maker. I can't think of the guy who played the British Captain but he's best known for playing Indiana Jone's boss in the Indiana Jones films. There were several character actors that I've seen around, two of them also played in the movie Flight of the Phoenix.
The plot was that this mission had to go behind Japanese lines on Rabaul to knock out a Japanese radio station so that Robinson, who spoke Japanese, could broadcast a phony report. This was to mask a American naval convoy that was going through the straights. The Brit captain was a gun ho upper crust type, neither Robinson or the Brit soldiers really wanted to go along. They wind up getting trapped behind the lines and being chased by the Japanese.
Does any of this ring a bell?