His father was René II, count of Rohan (1550-86), and head of one of the oldest and most distinguished families in France, which was connected with many of the reigning houses of Europe. He was educated by his mother, who was a woman of exceptional learning and force of character. Rohan was by birth the second son, but his elder brother René dying young he became the heir of the name. He appeared at court and in the army at the age of sixteen, and was a special favourite with Henry IV, after whom, failing the house of Conde, he might be said to be the natural chief of the French Protestants. Having served till the peace of Vervins, he travelled for a considerable time over Europe, including England and Scotland, in the first of which countries he received the not unique honour of being called by Elizabeth her knight, while in the second he was godfather at Charles I's christening.
On his return to France he was made duke and peer at the age of twenty-four, and two years later (1603) married Marguerite de Béthune, the duc de Sully's daughter. He served in high command at the celebrated siege of Jülich in 1610, but soon afterwards he fell into active or passive opposition to the government over the religious disputes. For a time, however, he abstained from actual insurrection, and he endeavoured to keep on terms with Marie de 'Medici; he even, despite his dislike of De Luynes, the favourite of Louis XIII, reappeared in the army and fought in Lorraine and Piedmont.
It was not till the decree for the restitution of church property in the south threw the Bearnese and Gascons into open revolt that Rohan appeared as a rebel. His authority and military skill were very formidable to the royalists; his constancy and firmness greatly contributed to the happy issue of the war for the Huguenots, and brought about the treaty of Montpellier (1623). But Rohan did not escape the results of the incurable factiousness which showed itself more strongly perhaps among the French Huguenots than among any other of the numerous armed oppositions of the 17th century. He was accused of luke-warmness and treachery, though he did not hesitate to renew the war when the compact of Montpellier was broken.
Again a hollow peace was patched up, but it lasted but a short time, and Rohan undertook a third war (1627-29), the first events of which are recounted in his celebrated Memoirs. This last war (famous for the defence of La Rochelle by Soubise, Rohan's younger brother) was one of considerable danger for Rohan. In spite of all efforts he had in the end to sign a peace, and after this he made his way quickly to Venice. Here he is said to have received from the Porte the offer of the sovereignty of Cyprus. It is more certain that his hosts of Venice wished to make him their general-in-chief, a design not executed owing to the peace of Cherasco (1631).
At Venice he wrote his Memoirs; at Padua, Le Parfait Capitaine. But when France began to play a more conspicuous part in the Thirty Years' War Rohan was again called to serve his lawful sovereign, and entrusted with the war in the Valtelline. The campaign of 1633 was completely successful, but Rohan was still considered dangerous to France, and was soon again in retirement. At this time he wrote his Traité du gouvernement des treize cantons.
Rohan fought another Valtelline campaign, but without the success of the first, for the motives of France were now held in suspicion. The unfortunate commander retired to Geneva and thence went to the army of Bernhard of Saxe-Weimar. He received a mortal wound at the battle of Rheinfelden on February 28, 1638, and died at the abbey of Konigsfeld, canton Berne, on the 13th of April. His body was buried at Geneva, and his arms were solemnly handed over to the Venetian government. With his daughter Marguerite the honours of the family of Rohan-Gie passed to the house of Chabot.
Rohan's Memoires sur les chases qui se sont passees en France, etc., rank amongst the best products of the singular talent for memoir writing which the French noblesse of the 16th and 17th centuries possessed. Alike in style, in clearness of matter and in shrewdness, they deserve very high praise. The first three books, dealing with the civil wars, appeared in 1644; the fourth, containing the narrative of the Valtelline campaigns, not till 1758. Some suspicions were thrown on the genuineness of the latter, but, it would seem, groundlessly. His famous book on the history and art of war, Le Parfait Capitaine, appeared in 1631 and subsequently in 1637 and 1693 (see also Quincy, Art de la guerre, Paris, 1741). It treats of the history and lessons of Caesar's campaigns and their application to modern warfare, and contains appendices dealing with phalangite and legionary methods of fighting and the art of war in general. He also wrote an account of his travels, the book on Switzerland mentioned above, De l'interêt des princes et états de la chrêtiente, etc. The Memoirs may be conveniently found in the collection of Michaud and Poujoulat, vol. 19.
See Fauvelet de Foix, Histoire du Duc Henri de Rohan (Paris, 1667); Schybergson, Le Duc de Rohan et la charte du parti protestant en France (Paris, 1880); Buhring, Venedig, Gustaf Adolf, und Rohan (Halle, 1885); Laugel, Henri de Rohan, son role politique et militaire (Paris, 1889); Veraguth, Herzog Rohan und seine Mission in Graubilnden (Berne, 1894); and Shadwell, Mountain Warfare.
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