A collection of short stories set towards the end of the first world war (the German 1918 Cambrai offensive occurs during one of the stories), with Biggles a flight leader in 266 squadron.

• The Professor - a new pilot learns that there is more to flying than geometry
• The Joy-ride - Biggles takes a German Albatros for a spin
• Bridge Party - the Professor blows up a bridge, from below
• Bottle Party - the squadron attack several spotter balloons with bottles on strings
• The Trap - Biggles takes revenge for a booby-trapped observation balloon
• The Funk - a new pilot regains his courage when his goldfish is killed
• The Professor Comes Back - the professor escapes from prison, discovering a secret bomber base in the process
• The Thought Reader - Biggles uncovers a spy signalling by using wheat sheaves (story also in Pioneer Air Fighter)
• The Great Arena - an act of German chivalry is reciprocated by Biggles, but only after an attack decimates the German flight
• Biggles Finds his Feet - Biggles is stuck on the ground and repels an entire German attack in order to save a friend stuck in No Mans Land (story also in Pioneer Air Fighter)
• The Dragon's Lair - a phosphorous-firing chateau is put out of business
• Biggles' Day Off - visiting his godfather in Kent, Biggles sinks a submarine
• Scotland for Ever - Biggles gets caught in the Cambrai advance, helping retake the aerodrome when the allies counterattack