By July of 1944 (with the Allied success of D-Day coupled with the even bigger Soviet success of Bagration) it was obvious Germany had lost the Second World War. The German military commander-in-chief of the western front was Field Marshal Gerd von Rundstedt. By that point in the war Rundstedt had acquired a reputation for saying and doing what he saw fit, regardless of the consequences.
So, perhaps it was no surprise that on July 1, 1944 he bluntly informed Field Marshal Wilhelm Keitel (the head of the German armed forces high command - OKW) that they had no choice but to make peace
