He was born in Bârlad, the first of three children of Ion Popa and Aspasia, née Pavelescu.
[1] He went to primary school in Călmățui, a village in the Grivița commune, in the former Tutova County, where his father was a schoolteacher.
In 1916, when Romania entered World War I on the side of the Allies, Popa interrupted his studies and attended an officers' school, graduating as sub-lieutenant.
In 1917, he fought at the battles of Mărăști and Oituz, an experience he will write about in "Flower of steel, novel of war".
Other plays include: Ciuta (1922), Mușcata din fereastră (1928) Acord familiar, Cuiul lui Pepelea, Răzbunarea sufleurului, and Răspântia cea mare.