To change the beliefs and practices of the Orthodox Church would require a sustained effort, but the clergy and the millions of faithful would have difficulty forming an effective opposition. The army, the other pillar of the Russian state and autocracy, posed a different problem. He considered himself a soldier and was keenly aware of the importance of possessing a loyal, efficient army. Nevertheless, from his first days on the throne, Peter managed to offend the institution that he most needed for support. He was determined to reorganize the Russian army on the Prussian model. Everything was to be reformed or replaced: uniforms, discipline, drill, battlefield tactics, even its commander—all were to be Prussianized. Peter liked neatness and smartness and wanted his soldiers to wear close-fitting German uniforms. He took away the long, loose coats of Russian soldiers, useful in the cold of a northern winter, and put them into lighter, thinner, tight-fitting German uniforms. Before long, some could scarcely recognize the newly costumed, powdered men of the Russian Imperial Guard. Russian officers were expected to appear in new uniforms garnished with shoulder straps and gold knots. Peter himself began wearing the blue uniform of a Prussian colonel. At the beginning of his reign, he was content to wear the broad blue ribbon of the Russian Order of St. Andrew; then he switched to the Prussian Order of the Black Eagle. He often showed off a ring containing a miniature portrait of Frederick, which he announced was his most precious possession.
Peter had never been near a battlefield, but he was an excellent drillmaster, and on the parade ground he made Russian soldiers practice Prussian exercises for hours, enforcing his commands with a little cane. No officer was excused from these drills, and fat, middle-aged generals were obliged to turn out at the head of their regiments and do parade ground drill on their stiff, gouty limbs.
The antics of old generals trying to carry out Prussian exercises gave Peter amusement, but dressing his soldiers as Germans and teaching them Prussian drill was only the beginning. He replaced the traditional Russian sovereign’s personal bodyguard, drawn from the Preobrazhensky regiment—a unit founded by Peter the Great and of which Peter III was honorary colonel—with a Holstein Cuirassier Regiment to which he gave the name of Body Guard of the Imperial Household. This created intense indignation in the Guards and in the army generally. He announced that he intended to disband and abolish the regiments of the Russian Imperial Guard altogether and distribute the men among the regular line regiments. As a culminating insult, he placed his uncle, Prince George Lewis of Holstein, who had no military experience, in command of the Russian army.
At the moment Peter was proclaimed emperor in December 1761, Frederick of Prussia was in a precarious position. Nearly a third of his dominions were in enemy hands. The Russians had occupied East Prussia and part of Pomerania; the Austrians had regained most of Silesia: Berlin, his capital, had been pillaged and lay half in ruins. His army now was composed mostly of young recruits, and the king himself resembled “a demented scarecrow.” To rid himself of Russia as an enemy, he was prepared to sign a treaty, permanently sacrificing East Prussia. Then came Empress Elizabeth’s death and Peter’s accession to the throne. When Frederick learned that the new emperor had ordered a cessation of hostilities, he responded by ordering the immediate release of all Russian prisoners and sent a twenty-six-year-old officer, Baron Bernhard von Goltz, to St. Petersburg to negotiate peace. Meanwhile, Prussia’s interests were in the care of the English ambassador, Sir Robert Keith, who had followed Sir Charles Hanbury-Williams’s practice of sending military information to Frederick in Berlin. Now that Peter was on the throne, Keith’s influence was at a peak. The Austrian ambassador, Count Mercy, called him “the chief instrument of the Prussian party. Not a day passes that the emperor does not see Mr. Keith, or send him fruit, or pay him other attentions.” Keith’s own dispatches also reveal this closeness. Only three days after Peter’s accession, Keith informed London that “at a dinner, His Imperial Majesty, with whose good graces I have always been honored, came up to me and smilingly told me in my ear that he hoped I would be pleased with him as the night before he had sent couriers to the different corps of his army with orders not to advance further into Prussian territory and to cease all hostilities.” Three weeks later, when Keith was supping with the emperor in Elizabeth Vorontsova’s apartment, Peter told him that he wanted to settle matters with the king of Prussia as soon as possible and was “resolved to get free of all commitments to the Court of Vienna.”