Answer the question at the end by quoting:

Clarence White (born Clarence Joseph LeBlanc; June 7, 1944 - July 14, 1973), was an American bluegrass and country guitarist and singer. He is best known as a member of the bluegrass ensemble the Kentucky Colonels and the rock band the Byrds, as well as for being a pioneer of the musical genre of country rock during the late 1960s. White also worked extensively as a session musician, appearing on recordings by the Everly Brothers, Joe Cocker, Ricky Nelson, Pat Boone, the Monkees, Randy Newman, Gene Clark, Linda Ronstadt, Arlo Guthrie, and Jackson Browne amongst others. Together with frequent collaborator Gene Parsons, he invented the B-Bender, a guitar accessory that enables a player to mechanically bend the B-string up a whole tone and emulate the sound of a pedal steel guitar.
During 1964, White began to look beyond bluegrass music towards rock 'n' roll as an avenue for artistic expression. Although he was influenced by Country guitarists like Doc Watson, Don Reno and Joe Maphis, he also idolized the playing of jazz guitarist Django Reinhardt, rock 'n' roller Chuck Berry, and studio musician James Burton. White even anticipated the viability of a folk/rock hybrid when, in the summer of 1964, he was approached by Jim Dickson to record a version of the then-unreleased Bob Dylan song "Mr. Tambourine Man" with electric instruments. However, despite White's enthusiasm for the project, he was unable to convince his bandmates in the Kentucky Colonels of the experiment's validity and ultimately, the song was instead recorded by Dickson's proteges, the Byrds. By the time the original line-up of the Kentucky Colonels folded in late 1965, White had become a respected and well-known guitarist. Abandoning bluegrass temporarily, he switched from his Martin D-28 acoustic guitar to an electric Fender Telecaster, with the intention of becoming a studio musician like his hero James Burton. Transitioning to electric guitar required White to modify his right hand playing technique, switch from open chording to fretting the whole guitar neck with his left hand, and practice using the tone and volume controls. However, he soon mastered the intricacies of the instrument and, between 1965 and 1968, he undertook session work for artists including Ricky Nelson, the Monkees, and the Gosdin Brothers. As 1965 turned into 1966, White met Gene Parsons and Gib Guilbeau at a recording session for the Gosdin Brothers and shortly after, he began to perform live with the duo in local California clubs, as well as doing regular session work on their records, which were released under the moniker of Cajun Gib and Gene. 1966 also saw White begin playing with a country group called Trio, which featured drummer Bart Haney and former Kentucky Colonel, Roger Bush, on bass. In autumn of that year, as a result of his friendship with Gilbeau, Parsons and the Gosdin Brothers, White was asked to provide lead guitar to ex-Byrd Gene Clark's debut solo album, Gene Clark with the Gosdin Brothers. White also briefly joined Clark's touring band shortly thereafter. During the Clark album sessions, White reconnected with mandolin player and bassist Chris Hillman, who he had known during the early 1960s as a member of the bluegrass combo the Hillmen. Hillman was currently a member of the Byrds and in December 1966, he invited White to contribute countrified lead guitar playing to his songs "Time Between" and "The Girl with no Name", which both appeared on the Byrds' Younger Than Yesterday album. The country-oriented nature of the songs was something of a stylistic departure for the group and can be seen as an early indicator of the experimentation with country music that would color the Byrds' subsequent work. White also contributed guitar to the band's follow-up album, The Notorious Byrd Brothers, and to their seminal 1968 country rock release, Sweetheart of the Rodeo.

did white do anything in 1968?

between 1965 and 1968, he undertook session work for artists including Ricky Nelson, the Monkees, and the Gosdin Brothers.

IN: Ludendorff was born on 9 April 1865 in Kruszewnia near Posen, Province of Posen, Kingdom of Prussia (now Poznan County, Poland), the third of six children of August Wilhelm Ludendorff (1833-1905). His father was descended from Pomeranian merchants who had achieved the prestigious status of Junker. Erich's mother, Klara Jeanette Henriette von Tempelhoff (1840-1914), was the daughter of the noble but impoverished Friedrich August Napoleon von Tempelhoff (1804-1868) and his wife Jeannette Wilhelmine von Dziembowska (1816-1854), who came from a Germanized Polish landed family on the side of her father Stephan von Dziembowski (1779-1859). Through Dziembowski's wife Johanna Wilhelmine von Unruh (1793-1862), Erich was a remote descendant of the Counts of Donhoff, the Dukes of Duchy of Liegnitz and Duchy of Brieg and the Marquesses and Electors of Brandenburg.

In the West in 1916 the Germans attacked unsuccessfully at Verdun and soon were reeling under British and French blows along the Somme. Ludendorff's friends at OHL, led by Max Bauer, lobbied for him relentlessly. The balance was tipped when Romania entered the war, thrusting into Hungary. Falkenhayn was replaced as Chief of the General Staff by Field Marshal Hindenburg on 29 August 1916. Ludendorff was his chief of staff as first Quartermaster general, with the stipulation that he would have joint responsibility. He was promoted to General of the Infantry. Chancellor Bethmann-Hollweg warned the War Cabinet: "You don't know Ludendorff, who is only great at a time of success. If things go badly he loses his nerve." Their first concern was the sizable Romanian Army, so troops sent from the Western Front checked Romanian and Russian incursions into Hungary. Then Romania was invaded from the south by German, Austro-Hungarian, Bulgarian, and Ottoman troops commanded by August von Mackensen and from the north by a German and Austro-Hungarian army commanded by Falkenhayn. Bucharest fell in December 1916. According to Mackensen, Ludendorff's distant management consisted of "floods of telegrams, as superfluous as they were offensive." When sure that the Romanians would be defeated OHL moved west, retaining the previous staff except for the operations officer, blamed for Verdun. They toured the Western Front meeting --and evaluating-- commanders, learning about their problems and soliciting their opinions. At each meeting Ludendorff did most of the commander's talking. There would be no further attacks at Verdun and the Somme would be defended by revised tactics that exposed fewer men to British shells. A new backup defensive line would be built, like the one they had constructed in the east. The Allies called the new fortifications the Hindenburg Line. The German goal was victory, which they defined as a Germany with extended borders that could be more easily defended in the next war. Hindenburg was given titular command over all of the forces of the Central Powers. Ludendorff's hand was everywhere. Every day he was on the telephone with the staffs of their armies and the Army was deluged with "Ludendorff's paper barrage" of orders, instructions and demands for information. His finger extended into every aspect of the German war effort. He issued the two daily communiques, and often met with the newspaper and newsreel reporters. Before long the public idolized him as their Army's brain.

Were there other countries involved?

OUT:
Romania was invaded from the south by German, Austro-Hungarian, Bulgarian, and Ottoman troops