Final answer:
The Battle of Guadalcanal was fought from August 7, 1942, to February 9, 1943, during World War II, marking a significant shift in the Pacific Theater in favor of the Allies.
Step-by-step explanation:
The Battle of Guadalcanal was a pivotal six-month campaign during World War II that took place on and around the island of Guadalcanal in the Solomon Islands. The battle began on August 7, 1942, and concluded on February 9, 1943. This was one of the first major offensive and a decisive victory for Allied forces against the Empire of Japan, significantly altering the balance in the Pacific Theater. Japanese forces displayed fierce resistance and reliance on tactics of heroic determination, but ultimately the United States' strategy of island-hopping and isolating Japanese-controlled islands proved successful. The capture of Guadalcanal provided a strategic base for launching further offensives towards Japan, marking the beginning of the transition to Allied offensives in the Pacific War.