In late September 1938, Hungary was ready to mobilize between 200,000 and 350,000 men on the Czechoslovak borders in case the Czechoslovak question could not be solved on diplomatic level, in favor of the Hungarian territorial claims. After the Munich Agreement the Hungarian Army had remained poised threateningly on the Czechoslovak border. They reportedly had artillery ammunition for only 36 hours of operations, and were clearly engaged in a bluff, but it was a bluff the Germans had encouraged, and one that they would have been obliged to support militarily if the much larger, better trained and better equipped Czechoslovak Army chose to fight. The Czechoslovak army had built 2,000 small concrete emplacements along the border in places where rivers did not serve as natural obstacles.