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.
On June 4, 1942, US aircraft flying from USS Enterprise, USS Hornet, and USS Yorktown attacked and sunk four Japanese carriers, forcing Yamamoto to withdrawal. The Battle of Midway marked the turning point of World War II in the Pacific.Commanders at the Battle of Midway:n May 1942, Japanese Admiral Isoroku Yamamoto sought to draw the US Pacific Fleet into a battle where he could overwhelm and destroy it. To accomplish this he planned an invasion of Midway Island which would provide a base for attacking Hawaii.