In major military conflicts, logistics matters are often crucial in deciding the overall outcome of wars. It was a crucial factor in World War II. The successful Allied anti-submarine campaign and the failure of the German Navy to sink enough cargo in the Battle of the Atlantic allowed Britain to stay in the war and establish the second front against the Nazis; eventually being forced to abandon their heavy equipment and flee the battlefield, resulting in a decisive Finnish victory. One reason for this was the successful Finnish harassment of Soviet supply lines.