why did germany lose ww1

At the start of 1918, it was by no means certain what the outcome of the war was going to be. France and Britain were just about hanging on. Although the USA had come onto the war, they had yet to make any impact on the Western Front. In the east, the Germans had effectively won the war.against an enemy, Russia, which had undergone a communist revolution and was ready to make peace at almost any price. The Russians ally Rumania had collapsed.
.In March 1918, the Germans began a sweeping assault which saw them break through Allied lines. They swept forward, captured thousands of prisoners and came within striking distance of Paris. But by November of the same year, the asked for an end to the fighting (an armistice). Why was this?
The German Spring Offensive which began on the 21st March 1918 saw them make swift progress. Whereas before this attacks had consisted of slow-paced infantry walking over no-man's-land after days of artillery bombardment, the new pushes consisted of stormtroopers leading the way. Especially trained for the purpose of capturing trenches, they were flexible and quick, attacking points in the line repeatedly, finding a weakness and spilling into it, in small detachments. They were

The problem of Allied non-cooperation was finally solved when at the Doullers Conference, Haig handed over the control of his Allied forces to Foch. The French general now had the ability to time coordinated attacks and pushes which could extend throughout the entire Allied front line. A synchronized attack by battalions up and down the Western Front could be launched, a feat which was virtually impossible with the disjointed command structure before the unification of the Allied forces. Overall, the new, centralized command structure was one of the main reasons why the counter-attacks succeeded.

The Allied powers had by now re-thought their battle plans. After battles such as Verdun and The Somme causing millions of deaths with little or no land changing hands, their new tactics consisted of using several strategies simultaneously, and in the right balance. Instead of sending thousands of men at virtually undamaged machine-guns and opposition trenches, the new Allied assaults were led by tanks, moving in waves of several dozen. They were followed closely by infantry, who took cover behind their armour and took advantage of the tanks crunching holes through the barbed wire. The Allies now had superiority in the air, with over 800 planes being used to spot enemy artillery. The Allied artillery - which was, by now, vastly more accurate - could pick them out, target them with Sound Rangers and destroy them as to stop them stopping the advance of the tanks. The artillery also provided a 'creeping barrage' of fire, between twenty and forty yards in front of the fr