Operation Petticoat (1959) is a delightful blend of wartime adventure and screwball comedy that remains one of Hollywood's most charming submarine films. Directed by Blake Edwards, the film follows the misadventures of Lieutenant Commander Matt Sherman (Cary Grant), who is tasked with evacuating his damaged submarine, the USS Sea Tiger, from the Philippines in the early days of WWII. His plans are complicated by the arrival of con-artist Lieutenant Nick Holden (Tony Curtis) and, most unexpectedly, five stranded Army nurses who turn the all-male vessel upside down.

The film's brilliance lies in its perfect comic timing and the sparkling chemistry between Grant and Curtis. Grant delivers his signature deadpan exasperation as the straight-laced commander, while Curtis shines as the fast-talking opportunist who somehow makes everything work. The premise of a pink submarine (created through a hilarious paint-mixing mishap) becomes a wonderful visual gag that symbolizes the film's cheerful absurdity.

What makes Operation Petticoat particularly enjoyable is how it balances genuine tension with laugh-out-loud moments. The submarine's various malfunctions and close calls with Japanese forces provide legitimate stakes, while the culture clash between the naval crew and the nurses creates endless comedic situations. The film never takes itself too seriously, yet maintains enough military authenticity to ground its humor.

Viewers should watch Operation Petticoat for its timeless humor, stellar performances, and clever script. It represents classic Hollywood comedy at its best—witty, well-paced, and genuinely funny without relying on crude humor. The film's lighthearted take on wartime adversity makes it perfect for anyone seeking an entertaining escape that has stood the test of time.