Answer:
Russia had both the largest army and navy.
Step-by-step explanation:
Germany fielded about 3,822,450 men the second largest army in the world, outnumbered only by the Russian army. The navy mustered 161,500 men and had commissioned fifteen Dreadnought battleships, twenty-two pre-Dreadnought battleships, four battle cruisers, nine armored cruisers, forty-one protected cruisers, 149 destroyers, and twenty-eight submarines. In its African colonies, Germany also had 5,600 men in the Schutztruppe and police forces and 7,800 indigenous forces during the First World War in 1914