What technology advancements did UDTs witness by the end of WWII?

By the end of World War II, Underwater Demolition Teams (UDTs) experienced significant advancements in diving gear and explosives, which were crucial for their operations. Enhanced diving gear, such as the development of specialized wetsuits and improved oxygen rebreathers, allowed operatives to conduct prolonged underwater missions more effectively and safely.

Additionally, better explosives, including more effective demolition charges and shape charges, enabled UDTs to execute critical demolition tasks against enemy fortifications and obstacles, supporting amphibious assaults. These technological improvements directly contributed to the effectiveness of UDTs in reconnaissance, sabotage, and mine clearance operations, showcasing their essential role in naval warfare during the conflict.

The other options do not align with the specific advancements relevant to the UDTs during this period. New combat aircraft, improved ground vehicles, and more advanced naval ships, while significant in their respective fields, do not pertain to the specialized functions and technologies utilized by the UDTs in their unique operational environment.