Which battle did america receive their fist major land victory

The answer you are looking for is The Battle of Guadalcanal.

This battle was the first major offensive and victory for the Allies in WWII Pacific Theater. The American marines were able to launch a  surprise attack on the Japanese troops in the Guadalcanal section of the Solomon Islands and take an airbase that was under construction.

answer; i believe the above statement is (true);

idk you know what i mean hahahaha