CHAPTER XIII. Advance of the Prussians towards the Field of Waterloo 490 Difficulties and impediments attending their march 491 The Fifteenth and Sixteenth Prussian Brigades reach the Wood of Paris 492 At half past four o'clock, BLÜCHER decides upon attacking the Right Flank of the French Army with these Brigades, without waiting for the arrival of more of his troops 493 Prussian Cavalry driven back by DOMON 494 Three Prussian Battalions attack the Extreme Right of the French general Front Line, near Smohain; but are compelled to retire into the Village 495 NAPOLEON detaches LOBAU's Corps in support of DOMON 495 The French Regiments of the Old and Middle Guard take up the position, in reserve, on the Heights of La Belle Alliance, vacated by LOBAU's Corps 495 BLÜCHER's dispositions 496 LOBAU becomes engaged with BÜLOW 496 The remainder of BÜLOW's Corps reaches the Field 496 BLÜCHER's dispositions 496 Relative strength of BÜLOW's and LOBAU's forces 497 NAPOLEON detaches the Young Guard to Planchenoit, in support of LOBAU's Right 498 At about six o'clock, BLÜCHER is informed that THIELEMANN is attacked by a superior force at Wavre 499 He does not allow this circumstance to deter him from his present purpose 499 BÜLOW attacks Planchenoit 500 Contest in the Village 500 The Prussian troops driven out 500 Having rallied, they renew their attack 501 NAPOLEON detaches two Battalions of the Old Guard to Planchenoit 501 The Prussians are again driven out of the Village, and pursued as far as their main position 501 French and Prussian Cavalry become engaged 501 NAPOLEON, perceiving preparations on the part of the Prussians for renewing the attack upon Planchenoit, detaches General PELET with another Battalion of the Old Guard to that Village 502 Critical situation of NAPOLEON 503 He resolves on making a renewed and formidable attack upon WELLINGTON's Line 503