The First German Panzer unit into the field was Abteilung 1 which left the Daimler plant for training at Sedan January 5 1918 after basic training a Demonstration was held for Crown prince Wilhelm.
there were problems uncovered during the training which slowed down the production of the A7V.
the Sedan training went well for the Tank crews but when the demonstration for General Ludendorff
took place on February 25 1918 it did not go well a report submitted to the OHL said the A7V was not suited to currant Battlefield conditions. from the conception of the A7V in 1916 the Trenches had increased in width
from 1.6m to 4m so the A7V which was better then the French Schneider and St Chamond but very
inferior to the British tanks