The Eve of St. Mark (1944)

Hometown boy Quizz West (William Eythe) is one of fewer than 19,000 draftees in 1940. After being familiarized with his fiancée Janet and him, we find Quizz at a gun position fighting off the Japanese along the Philippine shoreline. The situation becomes hopeless for Quizz and his fellow gunners and it's either flee or hold their positions and provide cover for escapees. To make his decision, Quizz communes with his mother and Janet through the medium of dreams.