When does napoleon make his first move for power in animal farm?

Napoleon makes his first move for power in "Animal Farm" shortly after the animals successfully overthrow their human owner, Mr. Jones. He begins to assert his authority by taking charge of the puppies, isolating them to train them as his loyal enforcers. This strategic move sets the stage for his gradual accumulation of power, as he later uses them to intimidate and eliminate his rivals, particularly Snowball.