Answer the question at the end by quoting:

Richard Georg Strauss (11 June 1864 - 8 September 1949) was a leading German composer of the late Romantic and early modern eras. He is known for his operas, which include Der Rosenkavalier, Elektra, Die Frau ohne Schatten and Salome; his Lieder, especially his Four Last Songs; his tone poems, including Don Juan, Death and Transfiguration, Till Eulenspiegel's Merry Pranks, Also sprach Zarathustra, Ein Heldenleben, Symphonia Domestica, and An Alpine Symphony; and other instrumental works such as Metamorphosen and his Oboe Concerto. Strauss was also a prominent conductor in Western Europe and the Americas, enjoying quasi-celebrity status as his compositions became standards of orchestral and operatic repertoire.
Strauss wrote two early symphonies: Symphony No. 1 (1880) and Symphony No. 2 (1884). However, Strauss's style began to truly develop and change when, in 1885, he met Alexander Ritter, a noted composer and violinist, and the husband of one of Richard Wagner's nieces. It was Ritter who persuaded Strauss to abandon the conservative style of his youth and begin writing tone poems. He also introduced Strauss to the essays of Wagner and the writings of Arthur Schopenhauer. Strauss went on to conduct one of Ritter's operas, and at Strauss's request Ritter later wrote a poem describing the events depicted in Strauss's tone poem Death and Transfiguration. The new influences from Ritter resulted in what is widely regarded as Strauss's first piece to show his mature personality, the tone poem Don Juan (1888), which displays a new kind of virtuosity in its bravura orchestral manner. Strauss went on to write a series of increasingly ambitious tone poems: Death and Transfiguration (1889), Till Eulenspiegel's Merry Pranks (1895), Thus Spoke Zarathustra (1896), Don Quixote (1897), Ein Heldenleben (1898), Symphonia Domestica (1903) and An Alpine Symphony (1911-1915). One commentator has observed of these works that "no orchestra could exist without his tone poems, written to celebrate the glories of the post-Wagnerian symphony orchestra." James Hepokoski notes a shift in Strauss's technique in the tone poems, occurring between 1892 and 1893. It was after this point that Strauss rejected the philosophy of Schopenhauer and began more forcefully critiquing the institution of the symphony and the symphonic poem, thereby differentiating the second cycle of tone poems from the first.

Did he have any more?

Symphonia Domestica (1903) and An Alpine Symphony (1911-1915).

IN: Khalid Sheikh Mohammed (sometimes also spelled Khalid Shaikh Mohammed; among at least fifty pseudonyms; born March 1, 1964) is an Islamist militant held by the United States at the Guantanamo Bay detention camp under terrorism-related charges. He was named as "the principal architect of the 9/11 attacks" in the 9/11 Commission Report. Sheikh Mohammed was a member of Osama bin Laden's al-Qaeda organization, leading al-Qaeda's propaganda operations from around 1999 until late 2001. He confessed to FBI and CIA agents to a role in many of the most significant terrorist plots over the last twenty years, but his interrogators' use of enhanced interrogation techniques has caused some to question certain aspects of his confessions.

By the time the Bojinka plot was discovered, Mohammed had returned to Qatar and his job as a project engineer at the country's Ministry of Electricity and Water. He traveled in 1995 to Sudan, Yemen, Malaysia, and Brazil to visit elements of the worldwide jihadist community, although no evidence connects him to specific terrorist actions in any of those locations. On his trip to Sudan, he attempted to meet with Osama Bin Laden, who was at the time living there, aided by Sudanese political leader Hassan al-Turabi. After the US asked the Qatari government to arrest Mohammed in January 1996, he fled to Afghanistan, where he renewed his alliance with Abdul Rasul Sayyaf. Later that year, he formed a working relationship with Bin Laden, who had settled there. Bin Laden and his colleagues relocated their operations to Afghanistan at this time. Abu Hafs al-Masri/Mohammed Atef, bin Laden's chief of operations, arranged a meeting between bin Laden and Mohammed in Tora Bora sometime in mid-1996, in which Mohammed outlined a plan that would eventually become the quadruple hijackings of 2001. Bin Laden urged Mohammed to become a full-fledged member of Al Qaeda, but he continued to refuse such a commitment until around early 1999, after the 1998 U.S. embassy bombings in Nairobi and Dar es Salaam. Mohammed moved his family from Iran to Karachi, Pakistan, in 1997. That year, he tried unsuccessfully to join mujahideen leader Ibn al-Khattab in Chechnya, another area of special interest to Mohammed. Unable to travel to Chechnya, he returned to Afghanistan. He ultimately accepted bin Laden's invitation to move to Kandahar and join al-Qaeda as a full-fledged member. Eventually, he became leader of Al Qaeda's media committee.

what was his greatest accomplishment?

OUT:
Eventually, he became leader of Al Qaeda's media committee.