Son of King George I. He attended the Evelpidon School and graduated as a lieutenant in 1901. He was multilingual (5 languages). After the Goudi movement in 1909 he went to Germany and enlisted for higher education in the Dragoon Regiment. He returned to Greece and returned to active service under the government of Eleftherios. He returned to Greece and returned to Greece again after the Liberation of Greece and returned to Greece under the leadership of Liberal Venizelos. He took part in the Balkan wars. He was awarded the Order of Valour. He was promoted to Colonel as Commander of the Cavalry. He was sent to England during the First World War as a representative of the Government. After the removal of his brother King Constantine I, he went into private life in Athens. In 1917 he departed for Switzerland. In 1920 he returned to Greece with his brother Christopher also Makton and took over his military duties.

In 1921 he was at the head of the XII Division in Central Asia. He was involved in battles with the Turks in Kutahia, Eski Sheher and finally at Afion Krachisar. His military corps had many successes. Eventually, however, the great depth of the invasion towards Ankara, the incomplete to non-existent supply and the utter confusion that prevailed in the execution of orders and movements, led to the retreat. December 1921 finds Prince Andreas in Smyrna and then the return to Greece. He is appointed Commander of the 5th Army Corps in Epirus until 9/1922. Soon after, King Constantine is exiled and resigns in favour of George II. Andrew remains with his family in Corfu.

The consequences of the Asia Minor catastrophe will cause great upheavals in the political world of Greece. Andreas will go through the 1922 Revolutionary Tribunal, with other officers, and will be declared deprived of his rank. Andreas would eventually depart and live in European countries until his death in Monaco in 1944. He wrote a book of military memories of the Asia Minor disaster in 1930. ”Towards Disaster : The Greek Army in Asia Minor 1921”.