Final answer:
The Battle of Midway is the farthest west among the provided options, taking place in the Pacific Ocean, midway between Asia and North America.
Step-by-step explanation:
The battle that is farthest west among the options provided is D. Battle of Midway. The Battle of Midway took place in the Pacific Ocean, approximately midway between Asia and North America, hence its name. This battle is notably west compared to the locations of the Battle of Hastings which occurred in England, the Battle of Gettysburg in Pennsylvania, USA, and the Battle of Stalingrad in Russia. The Battle of Midway was a critical turning point in World War II's Pacific Theater, and its location far out in the Pacific is substantially farther west than the other battles listed.