Final answer:
The 2nd Ranger Battalion in World War II conducted airborne operations and performed amphibious assaults. In the Korean War, the 2nd Ranger Company served as line infantry.
Step-by-step explanation:
The activities of the 2nd Ranger Battalion during World War II included conducting airborne operations and performing amphibious assaults. They were known for carrying out daring raids behind enemy lines and serving as a spearhead in U.S. assaults. Additionally, in the Korean War, the 2nd Ranger Company served as line infantry against Chinese and North Korean attacks.