The coup d'etat of Thermidor (July 28, 1794) compelled the young disciple of Robespierre hurriedly to leave St Maximin, and to accept a small post at St Chamans.
After the coup d'etat of 1851 he settled with his family in Jersey, where he pursued agricultural experiments and wrote his socialist poem La Greve de Samarez.
After the coup d'etat of 18 Brumaire he became president of the tribunal of appeal and councillor of state.
A little more than twelve months later, a coup d'etat placed the tsesarevna Elizabeth on the throne (December 6, 1741), and Ivan and his family were imprisoned in the fortress of Diinamtinde (Ust Dvinsk) (December 1 3, 1742) after a preliminary detention a Riga, from whence the new empress had at first decided to send them home to Brunswick.
About this time he held aloof from Bonaparte, but though he declined to help Napoleon in the preparations for the coup d'etat of November 1799, he accepted employment from the Consulate, and from April 1800 till the 18th of August 1801 commanded the army in La Vendee.
Andreossy took part in the coup d'etat of the 18th of Brumaire, and on the 6th of January 1800 was made general of division.
For the present the connivance of the senate at his coup d'etat of Nivose led to the deportation of one hundred and thirty Jacobins; some were interned in the islands of the Bay of Biscay, while fifty were sent to the tropical colonies of France, whence few of them ever returned.
As a matter of fact, beyond lending the tsesarevna 2000 ducats, instead of the 15,000 she demanded of him, he took no part whatever in the actual coup d'etat which was as great a surprise to him as to every one else.
The services rendered by Eugene at the time of the coup d'etat of Brumaire (1799) and during the Consulate (1799-1804) served to establish his fortunes, despite the efforts of some of the Bonapartes to destroy the influence of the Beauharnais and bring about the divorce of Josephine.
The coup d'etat seemed to have failed.