Which groups played a pivotal role in securing Allied victory during WWII?

The response that all the listed groups played a pivotal role in securing Allied victory during WWII is accurate because each of these organizations contributed unique capabilities and strategies that were integral to multiple operations across different theaters of the war.

The Office of Strategic Services (OSS) was crucial for gathering intelligence and conducting espionage, which helped in planning operations and understanding enemy movements. They engaged in unconventional warfare and were instrumental in coordinating partisan activity in Europe and Asia.

Navy Raiders and Naval Combat Demolition Units (NCDUs) specialized in reconnaissance, demolition, and direct assaults on enemy positions. Their expertise allowed for critical pre-invasion operations, clearing obstacles and providing vital intelligence that facilitated successful landings, most notably in operations like D-Day.

Navy Underwater Demolition Teams (UDTs) were specifically formed to clear beach obstacles and perform reconnaissance ahead of amphibious landings. Their contributions ensured that landing forces faced fewer obstacles and could establish beachheads more securely and with reduced casualties.

Motor Torpedo Boat Squadrons operated throughout the war engaging enemy vessels and providing vital support in coastal campaigns. They were significant in disrupting supply lines and engaging enemy naval forces, which helped control key maritime areas.

Each of these groups operated in complementary ways, contributing to a multi-faceted