The regiment was led by Major Richard Rubach, helped by Lt. Viktor Noorkukk.

The regiment's first battalion consisted mostly of Viljandi County men led by Captain Arnold Purre.

The second battalion was made up of Tallinn and Tartu County men led by Captain Jüri Jürgen.

The third battalion was made up of Pärnu County men led by Captain Mats Mölder.

[2] The regiment was sent without adequate training or equipment (particularly machine guns) and suffered heavy losses, as there were many casualties to Soviet artillery and aircraft.