What was the primary objective of NCDUs during beach landings?

The primary objective of the Naval Combat Demolition Units (NCDUs) during beach landings was to clear obstacles for the safe landing of troops. These units were specifically trained to identify and demolish enemy fortifications and obstacles, such as barbed wire and mines, along the shoreline. This essential task ensured that landing forces could approach the beach without facing immediate danger from fixed defenses, ultimately allowing for a successful landing operation. NCDUs played a crucial role in enabling a safe pathway for the invading troops, thereby increasing the likelihood of a successful assault on heavily fortified positions during World War II. This operational focus highlights the importance of overcoming physical barriers to provide a secure environment for the main invasion force.