Wilhelm II, The Cosplay Soldier

...The irony was having avoided - courtesy of his mother - the years of strict military training that a normal Hohenzollern might expect, Wilhelm had none of the disciplined mental habits of a Prussian officer. Or rather , he looked and played the part - perfectly turned out, moderate if not ascetic in his eating and drinking - but he had no habit of application. Just as he had been a dilettante student, so he was a dilettante soldier. His adjutant, Adolf von Bülow, the experienced soldier seconded to see him through the army, admitted that after five years in the 1st Foot, Wilhelm had completely failed to learned the true values of soldiery.

Miranda Carter in,
George, Nicholas and Wilhelm:
Three Royal Cousins and the Road to World War I,
describing the "martial" qualities of WIlhelm II.