Question: Mathilde Ludendorff was the wife of the German General who was victorious at which two battles?
Context: Joseph Martin (1740–1808) was a brigadier general in the Virginia militia during the American Revolutionary War, in which Martin's frontier diplomacy with the Cherokee people is credited with not only averting Indian attacks on the Scotch-Irish American and English American settlers who helped win the battles of Kings Mountain and Cowpens, but with also helping to keep the Indians' position neutral and from siding with the British troops during those crucial battles.  Historians agree that the settlers' success at these two battles signaled the turning of the tide of the Revolutionary War—in favor of the Americans. The Hindenburg Programme of August 1916 is the name given to the armaments and economic policy begun in late 1916 by the Third "Oberste Heeresleitung" ("OHL", the German General Staff), Field Marshal Paul von Hindenburg and General Erich Ludendorff.  The two were appointed after the sacking of General Erich von Falkenhayn on 28 August 1916 and intended to double German industrial production, greatly to increase the output of munitions and weapons. Operation "Michael" was a major German military offensive during the First World War that began the Spring Offensive on 21 March 1918.  It was launched from the Hindenburg Line, in the vicinity of Saint-Quentin, France.  Its goal was to break through the Allied (Entente) lines and advance in a north-westerly direction to seize the Channel ports, which supplied the British Expeditionary Force (BEF) and to drive the BEF into the sea.  Two days later General Ludendorff, the Chief of the German General Staff, changed his plan and pushed for an offensive due west, along the whole of the British front north of the River Somme.  This was designed to separate the French and British Armies and crush the British forces by pushing them into the sea.  The offensive ended at Villers-Bretonneux, to the east of the Allied communications centre at Amiens, where the Allies managed to halt the German advance; the German Armies had suffered many casualties and were unable to maintain supplies to the advancing troops. The Cross of Otto and Mathilde, Otto-Mathilda Cross, or First Cross of Mathilde (German: Otto-Mathilden-Kreuz ) is a medieval "crux gemmata" (jewelled cross) processional cross in the Essen Cathedral Treasury.  It was created in the late tenth century and was used on high holidays until recently.  It is named after the two persons who appear on the enamel plaque below Christ: Otto I, Duke of Swabia and Bavaria and his sister, Mathilde, the abbess of the Essen Abbey.  They were grandchildren of the emperor Otto I and favourites of their uncle, Otto II.  The cross is one of the items which demonstrate the very close relationship between the Liudolfing royal house and Essen Abbey.  Mathilde became Abbess of Essen in 973 and her brother died in 982, so the cross is assumed to have been made between those dates, or a year or two later if it had a memorial function for Otto.  Like other objects in Essen made under the patronage of Mathilde, the location of the goldsmith's workshop is uncertain, but as well as Essen itself, Cologne has often been suggested, and the enamel plaque may have been made separately in Trier. During the Spanish-American War, United States Army and United States Navy fought 30 battles significant against the Spanish Army and Navy.  Of these, 26 occurred in the Caribbean Theater and 3 in the Pacific Theater.  The Caribbean theater had two campaigns: Puerto Rican Campaign, which had 10 battles, and the Cuban Campaign, which had 17 battles, while the Pacific theater had one campaign: the Philippine theater, which had two battles, but there was a battle in Guam, which was not significant enough to warrant as an individual campaign.  This list includes battles involving the U.S. Army, the U.S. Marines, and the U.S. Navy. Erich Friedrich Wilhelm Ludendorff (9 April 1865 – 20 December 1937) was a German general, the victor of the Battle of Liège and the Battle of Tannenberg.  From August 1916, his appointment as Quartermaster general ("Erster Generalquartiermeister") made him the leader (along with Paul von Hindenburg) of the German war efforts during World War I until his resignation in October 1918, just before the end of hostilities. Mathilde Friederike Karoline Ludendorff (born Mathilde Spiess; 4 October 1877 in Wiesbaden – 24 June 1966 in Tutzing) was a German psychiatrist.  Her third husband was General Erich Ludendorff.  She was a leading figure in the Völkisch movement known for her esoteric and conspiratorial ideas.  Together with Ludendorff, she founded the Princess Mathilde of Saxony, Duchess of Saxony (German: "Mathilde Maria Josepha Anna Xaveria, Prinzessin von Sachsen, Herzogin zu Sachsen" ; born 17 January 1936 in Bamberg, Bavaria, Germany) is a Princess of Saxony and member of the House of Wettin by birth and a Princess of Saxe-Coburg and Gotha as consort to Prince Johannes Heinrich of Saxe-Coburg and Gotha.  Mathilde is the fifth and youngest child of Friedrich Christian, Margrave of Meissen and his wife, Princess Elisabeth Helene of Thurn and Taxis, and a younger sister of Maria Emanuel, Margrave of Meissen, the late head of the Royal House of Saxony and senior claimant to the defunct throne of the Kingdom of Saxony. The two Battles of the Bruch "(Catalan: El Bruc)" were engagements fought successively between a French columns commanded by Brigadier General François de Schwarz and General of Division Joseph Chabran, and a body of Catalan volunteers and mercenaries led by General Antoni Franch i Estalella and Joan de la Creu Baiget, during the Peninsular War.  The result of these battles and actions fought at El Bruc, near Barcelona, Catalonia, between 6–14 June 1808 was a Spanish victory.  The Spanish also captured a French Imperial Eagle, adding to defeat a humiliation for the French army. A big lie (German: "große Lüge" ) is a propaganda technique.  The expression was coined by Adolf Hitler, when he dictated his 1925 book "Mein Kampf", about the use of a lie so "colossal" that no one would believe that someone "could have the impudence to distort the truth so infamously."  Hitler claimed the technique was used by "the Jews" to blame Germany's loss in World War I on German general Erich Ludendorff, who was a prominent nationalist and antisemitic political leader in the Weimar Republic.
Answer: Battle of Liège and the Battle of Tannenberg