Like many members of the Reichswehr, Lüttwitz was an outspoken opponent of the Treaty of Versailles that was signed in June 1919. He was concerned that the treaty's stipulations could cause the army to disintegrate during its period of re-organisation and he especially disliked the treaty articles that demanded the reduction of the army to 100,000 men, disbandment of the "Freikorps", and the extradition of about 900 men whom the Allies accused of war crimes. He planned to defy these stipulations of the treaty. As early as July 1919, Lüttwitz was involved in plots to topple the Weimar Republic and replace the government of Friedrich Ebert with a military dictatorship.