Böhm was actively involved in the Aster Revolution of 1918, and in January 1919 he became Minister of Defense in the Berinkey Government.

As Secretary of State, he invited the war hero Aurél Stromfeld to the military chief of staff.

He is supposedly mentioned in the Venona telegrams as an information source of the Soviets during the war.

After 1920 Böhm remained in Vienna, joining the ranks of the international social democratic movement.

After the unification of the MSZDP and MKP parties, Böhm resigned from his office, and resumed his life as an emigrant in Stockholm, in 1948.

One researcher, Wilhelm Agrell, claimed he was a Soviet spy, a statement which has been contested in a trial.