The Donau Campaign was the first of many defeats for the Allied Nations against the Soviets. The Soviets were Steamrolling over them. Moving through Hungary and Austria with airborne troops and helicopters carrying tanks and light vehicles. Over the mountains and through valleys, completely bypassing paths that the Allies though the Soviets would have to pass through to get to the Strategic positions for the Allies and the Soviets. Having only Anti Tank weapons and without Anti Air support the Soviets were able to over take the position without much resistance.
This was a major blow to the Allies, as much of the outposts were designed to hold back ground attacks from the Soviets. With them in control, they were now able to turn them against the Allies and make them their own.