He participated in World War I, in 1917 graduated Imperial Nicholas Military Academy.

Reek played important role in winning war against Baltische Landeswehr.

In September 1919 he achieved the rank of colonel and served as Chief of Staff of Viru Front.

After war Reek repeatedly served in positions of Chief of Staff, Minister of Defense and Commander of 2nd Division.

In 1941 Soviet occupation authorities arrested Reek imprisoned in Usollag and the following year executed him.