An auxiliary verb, also referred to as a helping verb, is one that is the part of a verb phrase that helps the main verb. As part of a verb phrase, a helping verb might show when an action occurs or whether the action is required. Let's look at a few examples to get a sense of just what auxiliary, or helping verbs, do.
The one reason that the Battle of Barbarossa became a turning point in the war was the number of casualties that the German army suffered. The Russians also suffered a huge number of casualties, but still they were able to hold their ground. The German army failed to push forward and ultimately they had to resort to attacking the United states.
It was the turning point in the war with Japan. Japan's navy hoped to draw out and destroy the U.S. Pacific Fleet's aircraft carrier strike forces. These forces tried to protect the U.S. airbase at Midway from Japanese attack. Japan wanted to establish an air base at Midway after defeating the American forces. During the fight, the United States was able to sink four Japanese aircraft carriers. This American victory over Japan in the Battle of Midway was the turning point of the war in the Pacific. It marked the beginning of the end of Japan's control of the Pacific Ocean. Why is the Battle of Stalingrad important?