Answer:
Struggles over the line of succession
Explanation:
His strategy Blitzkreig.
Literally meaning a lightening war, Hitler used this strategy in Poland. It was based on a co-ordinated rapid attack spearheaded by tanks and infantry along with an aerial attack by the Luftwaffe.
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The Battle of Midway turned the tides in favor of the Allied forces. In just six months after the attack on Pearl Harbor the Japanese suffered heavy damage to their fleet.