He was born on 18 June 1891 in Frysztakua a relative of the painter, Ludwik de Laveaux.
After the war he was assistant to Chief Executive lomendanta Czesław Mączyński in the peace negotiations.
From June to December 1919 he was a student at the military general staff School Course in Warsaw, but his studies were interrupted by the Polish-Soviet War where he was Chief of staff of the 5th Infantry Division but he resumed his studies from 1921 to 1922 at Doszkolenia Military School in Warsaw.
[3] In January 1936, he was appointed Pułkownik (commander) of the 8th Infantry Division in Modlin, where he was stationed at the outbreak of World War II.
In 1966, August Zaleski promoted de Laveaux to the rank of Brigadier General.