Advertised by Paramount as "Another Lives of the Bengal Lancers," The Last Outpost actually has more in common with two RKO releases, Friends and Lovers and The Lost Patrol. The story takes place during the Kurdistan campaign in WW I. Left to die in the desert, British officer Michael Andrews (Cary Grant) is rescued by intelligence agent John Stevenson (Claude Rains). While recuperating in the base hospital, Andrews falls in love with his nurse Rosemary (Gertrude Michael) -- who happens to be Stevenson's wife! This romantic entanglement is taken care of only after a climatic battle at a remote outpost in the Sudan, with Andrews and a skeleton crew desperately fending off hostile Kurdish tribesmen while awaiting reinforcements.
~ Hal Erickson, All Movie Guide