Jaklicz was born on 17 September 1894 in
Kraków. After graduation from high school, he studied philosophy at the
Jagiellonian University, and was active member of the
Polish Sokol movement. In August 1914, Jaklicz joined 3rd Infantry Regiment of the Polish Legions. Promoted to the rank of
company commander, he fought in
Eastern Carpathians,
Bessarabia and
Volhynia. Following the creation of the
Polish Auxiliary Corps, Jaklicz became a staff officer, and after its dissolution, he joined
Polska Siła Zbrojna (Polnische Wehrmacht). In late 1918, Jaklicz entered the
Polish Army, and was named commandant of a battalion of the 36th Academic Legion Infantry Regiment, which fought in the
Battle of Lemberg (1918). After serving briefly under Colonel
Władysław Sikorski, in March 1919, he was transferred to the staff of
9th Infantry Division, where he remained until December 1919. From 2 January until 15 April 1920 Jaklicz attended a military course at the College of Polish General Staff. During the Polish–Soviet War, he was chief of staff of
15th Infantry Division, and then commandant of 25th Infantry Regiment. In late 1920, Jaklicz went to France, to study at
Ecole Militaire. Upon his return to Poland (March 1923) he was nominated to the post of officer of
Polish General Staff, and was named chief of a department at the III Bureau, where he remained until December 1924. Jaklicz then lectured at
Higher War School, but in April 1929 he was named commandant of 12th Infantry Regiment from
Wadowice. Jaklicz lived in Wadowice until June 1932, returning then to the Higher War School. In December 1934 he was transferred to the 15th Infantry Division, which was located at
Bydgoszcz. In October 1935 Jaklicz once again was named chief of the III Bureau of the General Staff, remaining there until March 1939, when he was named deputy of the II Bureau of the General Staff. This was his last official post in the
Second Polish Republic: Jaklicz remained in the II Bureau until 18 September 1939, when he crossed the Polish-Romanian border. After escaping to
Romania, Jaklicz was interned for a while, and then managed to get to France. He was named commandant of infantry of the 2nd Infantry Division, and after the fall of France, he remained in the occupied country. As leader of underground Polish Army in France, he organized evacuation routes for Poles in
Marseille and
Grenoble. In May 1944 Jaklicz left for Great Britain, where he served in Center of Infantry Training. Demobilized in September 1947, he returned to France and settled there. On 1 January 1964 Polish Commander in Chief,
Władysław Anders, promoted him to
General brygady. Jaklicz died in Paris on 3 July 1974. He was buried at Les Champeaux Cemetery in Montmorency. == Ranks ==