He graduated in 1907 from the Alecu Donici High School in his native city[1] and then entered the infantry officers’ academy in Bucharest.

[2] Major Pastia took part in the Hungarian–Romanian War, seeing combat in Maramureș and Hungary, where in July 1919 he stood out at the battles of Kisújszállás and Fegyvernek.

[4] Promoted to lieutenant colonel, Pastia taught at the Higher War School and was a commander at the infantry officers’ academy.

His group, located on the heights between the Zariaza and Zuskan valleys, had the mission to advance on November 20 in the direction of Nizhny Zariznski and the Chir River, in order to connect with the German 22nd Panzer Division, some 20 kilometres (12 mi) away.

The next day, Pastia's group was attacked by artillery fire; he was mortally wounded by falling pieces of mortar.