His abilities as both leader and administrator led to his accelerated promotion and appointments to command of aviation units despite his lack of pilot's credentials.

After World War I and Austria-Hungary both ended, Jindra became a major mover in founding a Czechoslovakian air arm, which he eventually rose to command.

[4] Jindra began using a radio transmitter installed by Benno Fiala von Fernbrugg for overhead direction of artillery fire.

[2] However, on 14 November 1914, Jindra and his pilot were brought down by the riddling fire of a Russian cavalry unit.

They counted 180 bullet holes in their crashlanded plane, pulled their personal gear from the wreckage, and headed home, leaving a torched wreck behind them.

[3] Although Flik 1 was primarily a reconnaissance unit operating a wide range of two-seater aircraft, it still nurtured several flying aces; Godwin von Brumowski, Benno Fiala von Fernbrugg, Kurt Gruber, and Karl Kaszala all began their careers as aces under Jindra's command.

[2] On 13 June 1915, Jindra was flying as an observer for Max Libano in an unarmed Albatros B.I when the pair were attacked by two Russian Morane-Saulnier monoplanes.

[4] Three days later, he would participate in an air raid that would rattle the Russians; Jindra took Godwin Brumowski as his gunner, and they attacked a military parade being reviewed by Czar Nicholas II.