Wikipedia(Wikipedia isn’t always accurate):
The Airco DH.4 is a British two-seat biplane day bomber of the First World War. It was designed by Geoffrey de Havilland (hence "DH") for Airco, and was the first British two-seat light day-bomber capable of defending itself.

The DH.4 was developed as a two-seat combat aircraft, for both day bomber and aerial reconnaissance missions. It was to have been powered by the new 160 hp (120 kW) Beardmore Halford Pullinger (BHP) engine, but problems with that resulted in numerous other engines being used, perhaps the best of which was the 375 hp (280 kW) Rolls-Royce Eagle engine. The DH.4 first flew in August 1916 and it entered operational service in France on 6 March 1917 less than a year later. The majority were manufactured as general purpose two-seaters in the United States for the American expeditionary forces in France.

Following the Armistice of 11 November 1918, many DH.4s were sold to civil operators where it was found to be particularly useful as a mailplane. Early commercial passenger airplane service in Europe was initiated with modified variants of the DH-4. War-surplus DH-4s became key aircraft in newly emerging air forces throughout the world. The U.S. Army later had several companies re-manufacture its remaining DH.4s to DH.4B standard and they operated the type into the early 1930s.

Takeoff
So it is a pretty basic plane, throttle up to take off(NO TOUCH STICK) if you touch the stick, it will likely lose control, just let it gain the lift, and it will take off for you

The guns:
Don’t be like WHY WONT GUNS SHOOT I CLEARLY SEE THEM ON PLANE! Just activate1 for the front guns and activate2 for back gun.

Enjoy the plane!