As the Allies advanced out of the Operation Dragoon Bridgehead they suffered from too much success.  All of Southern France lay before them and where next was debated in the Allied High Command.  With indecision also came several supply shortages that accompany rapid advance.  What the Allies wanted to do was also limited by what they could do. The Germans they were facing were getting desperate as the Allied advance as stunted as it was was moving behind the 19th Army and facing annihilation knew the only way out was through the narrow Rhone Valley.