The Author of the work here translated, General Carl Von Clausewitz, was born at Burg, near Magdeburg, in 1780, and entered the Prussian Army as Fahnenjunker (i.e., ensign) in 1792.  He served in the campaigns of 1793-94 on the Rhine, after which he seems to have devoted some time to the study of the scientific branches of his profession.  In 1801 he entered the Military School at Berlin, and remained there till 1803.  During his residence there he attracted the notice of General Scharnhorst, then at the head of the establishment; and the patronage of this distinguished officer had immense influence on his future career, and we may gather from his writings that he ever afterwards continued to entertain a high esteem for Scharnhorst.  In the campaign of 1806 he served as Aide-de-camp to Prince Augustus of Prussia; and being wounded and taken prisoner, he was sent into France until the close of that war.  On his return, he was placed on General Scharnhorst’s Staff, and employed in the work then going on for the reorganisation of the Army.  He was also at this time selected as military instructor to the late King of Prussia, then Crown Prince.  In 1812 Clausewitz, with several other Prussian officers, having entered the Russian service, his first appointment was as Aide-de-camp to General Phul.  Afterwards, while serving with Wittgenstein’s army, he assisted in negotiating the famous convention of Tauroggen with York.  Of the part he took in that affair he has left an interesting account in his work on the “Russian Campaign.”  It is there stated that, in order to bring the correspondence which had been carried on with York to a termination in one way or another, the Author was despatched to York’s headquarters with two letters, one was from General d’Auvray, the Chief of the Staff of Wittgenstein’s army, to General Diebitsch, showing the arrangements made to cut off York’s corps from Macdonald (this was necessary in order to give York a plausible excuse for seceding from the French); the other was an intercepted letter from Macdonald to the Duke of Bassano.  With regard to the former of these, the Author says, “it would not have had weight with a man like York, but for a military justification, if the Prussian Court should require one as against the French, it was important.”

The second letter was calculated at the least to call up in General York’s mind all the feelings of bitterness which perhaps for some days past bad been diminished by the consciousness of his own behaviour towards the writer.

As the Author entered General York’s chamber, the latter called out to him, “Keep off from me; I will have nothing more to do with you; your d——­d Cossacks have let a letter of Macdonald’s pass through them, which brings me an order to march on Piktrepohnen, in order there to effect our junction.  All doubt is now at an end; your troops do not come up; you are too weak; march I must, and I must excuse myself from further negotiation, which may cost me my head.”