Why was Napoleon’s army long considered invincible?

Napoleon Bonaparte was a competent ruler and military leader. Under his command, the French army was never defeated until 1812. The success of Napoleon’s army lay in the fact that most of the state’s budget was spent on its maintenance. She was large and well-equipped. France had several hundred thousand soldiers in service. The composition also included foreign soldiers from the captured states. The army was professionally trained. It was commanded by talented strategists.