Fokker himself was a skilled pilot, demonstrating his aircraft on many occasions. On 13 June 1915, Fokker demonstrated the new "Eindecker" (monoplane) at Stenay in the German 5th Army Sector in front of the German Crown Prince and other VIPs. Fokker worked closely with an accomplished military pilot, Otto Parschau, to bring the Eindecker into military use and on this occasion both men demonstrated the aircraft. Max Immelmann, later to become a high-scoring Flying Ace with the "Eindecker", commented in a letter written shortly after this event on 25 June 1915 that: