Sent to a prisoner-of-war camp at the end of World War II awaiting reparation to the Soviet Union, Alexei was rescued by his brother Dmitri before his deportation. Reaching Munich, Germany, which was under American control, the two brothers joined their father George Grabbe who had move the headquarters of the Russian Orthodox Church Outside Russia to Munich from Yugoslavia to escape the communist takeover of Yugoslavia.
In Munich, Alexei joined the Monastery of St. Job of Pochaev in Munich that descended from the [[monasticism|monastics]] who were originally from [[Pochaev Lavra of the Dormition of the Theotokos|Pochaev Lavra]] and had taken refuge in Czechoslovakia after the Bolshevik revolution of 1917. On [[December 30]], 1948, Alexei was [[tonsure]]d a [[monk]] with name Anthony at the church belonging to the monastery of St. Job of Pochaev in Munich, Germany. Then with other monks from the monastery, he moved to the [[Holy Trinity Monastery (Jordanville, New York)|Holy Trinity Monastery]] in Jordanville, New York. From 1949 to 1954, he studied at the [[Holy Trinity Orthodox Seminary (Jordanville, New York)|seminary]] resident at the [[monastery]] after which he entered the [[Holy Orders]] and was [[ordination|ordained]] a [[priest]].
Over the years, Fr. Anthony was secretary to the monastery [[abbot]] Archbishop [[Vitaly (Maximenko) of Jersey City|Vitaly Maximenko]] and priest of the diocesan cathedral in New York City. There, he founded the [http://en.nycathedralofsign.org/stsergius_history.html St. Sergius High School], which he headed for nearly three decades. In 1962, he was awarded a [[Pectoral cross|Jeweled Cross]].