Leo Tolstoy then spent much of his time in Moscow, Tula and Saint Petersburg, leading a lax and leisurely lifestyle. He began writing during this period, including his first novel "Childhood", a fictitious account of his own youth, which was published in 1852. In 1851, after running up heavy gambling debts, he went with his older brother to the Caucasus and joined the army. Tolstoy served as a young artillery officer during the Crimean War and was in Sevastopol during the 11-month-long siege of Sevastopol in 1854–55, including the Battle of the Chernaya. During the war he was recognised for his bravery
Leo Tolstoy greatest of all living novelists. Gustave Flaubert, on reading a translation of "War and Peace", exclaimed, "What an artist and what a psychologist!" Anton Chekhov, who often visited Tolstoy at his country estate, wrote, "When literature possesses a Tolstoy, it is easy and pleasant to be a writer; even when you know you have achieved nothing yourself and are still achieving nothing, this is not as terrible as it might otherwise be, because Tolstoy achieves for everyone. What he does serves to justify all the hopes and aspirations invested in literature." The 19th-century British poet and critic Matthew Arnold opined