Complex sentence: On 23 August, it was demonstrated to a Russian military delegation in Paris where it was piloted by Louis Capazza firstly to a record altitude of 1,200 m (4,000 ft) and then hours later to a new record of 1,550 m (5,080 ft).
Split into simpler sentences: On 23 August, it was demonstrated to a Russian military delegation in Paris. In front of the observers, the airship was piloted by Louis Capazza first to a record altitude of 1,200 m (4,000 ft) and then hours later to a new record of 1,550 m (5,080 ft).