In 1939, he was penalized by the Party and left unemployed, until Martiros Saryan found him work in the Committee for the Preservation of Historical Monuments.

Kochar's writings from the front were published in a series of collections, starting with The Birth of Heroes (Herosneri tsnunde) in 1942.

In his last years, he published White Book, a collection of stories that included the novellas Patriarch (Nahapet), The Yearning and Euphrates Bridge.

From 1946 to 1951, he was the secretary of the Writers Union of Armenia and the editor of the monthly Sovetakan Grakanutyun (Soviet Literature).

An Armenian Sketchbook, Vasily Grossman's account of the two months he spent in Yerevan in late 1961, recounts his experience in helping to polish up the Russian translation of the novel.