Interwar military aircraft are military aircraft that were developed and used between World War I and World War II, also known as the Golden Age of Aviation. For the purposes of this list this is defined as aircraft that entered service into any country's military after the armistice on 11 November 1918 and before the Invasion of Poland on 1 September 1939. Aircraft are listed alphabetically by their country of origin. Civilian aircraft modified for military use are included but those that remained primarily civilian aircraft are not. List Argentina FMA AeC.2 trainer and observation FMA AeMB.2 bomber Australia Tugan Gannet transport Belgium ACAZ C.2 fighter LACAB GR.8 reconnaissance bomber Renard R.31 reconnaissance Stampe et Vertongen RSV.22 trainer Stampe et Vertongen RSV.26 trainer Stampe et Vertongen RSV.32 trainer Stampe et Vertongen SV.5 Tornado trainer Brazil CAP-4 Paulistinha trainer Muniz M-7 trainer Muniz M-9 trainer Bulgaria DAR 1 trainer Canada Canadian Vickers Vigil trainer/transport Canadian Vickers Vista patrol Canadian Vickers Vancouver patrol seaplane Canadian Vickers Varuna patrol seaplane Canadian Vickers Vedette patrol seaplane Curtiss Canuck trainer Curtiss-Reid Rambler trainer Fleet Fawn trainer Fleet Finch trainer Czechoslovakia Aero A.14 reconnaissance Aero A.18 fighter Aero A.32 army co-operation Aero A.100 light reconnaissance bomber Aero A.101 light reconnaissance bomber Avia B.122 trainer Avia BH-3 fighter Avia BH-21 fighter Avia BH-33 fighter Avia B-534 fighter Letov Š-4 fighter Letov Š-16 bomber Letov Š-20 fighter Letov Š-28 reconnaissance Letov Š-31 fighter Praga BH-41 trainer Praga E-39 trainer Denmark Orlogsværftet H-Maskinen reconnaissance Orlogsværftet O-Maskinen reconnaissance/trainer Estonia Post, Tooma & Org PTO-4 trainer Finland VL Sääski trainer VL Kotka patrol bomber VL Paarma trainer VL Tuisku trainer VL Viima trainer VL Pyry trainer France Amiot 120 bomber Amiot 143 bomber ANF Les Mureaux 113 reconnaissance Besson MB.411 submarine observation floatplane Blériot 127 bomber Blériot-SPAD S.51 fighter Blériot-SPAD S.61 fighter Blériot-SPAD S.81 fighter Blériot-SPAD S.91 fighter Blériot-SPAD S.510 fighter Bloch MB.81 ambulance Bloch MB.120 transport Bloch MB.131 reconnaissance bomber Bloch MB.200 bomber Bloch MB.210 bomber Breguet 19 light reconnaissance bomber Breguet 270 Series reconnaissance Breguet 413 light reconnaissance bomber Breguet 460 light bomber Breguet 470 transport CAMS 37 reconnaissance flying boat CAMS 55 reconnaissance flying boat Caudron C.59 trainer Caudron C.60 trainer Caudron C.270 trainer Caudron C.440 Goéland transport Caudron Simoun light transport Caudron C.690 trainer Dewoitine D.1 fighter Dewoitine D.9 fighter Dewoitine D.21 fighter Dewoitine D.27 fighter Dewoitine D.371 fighter Dewoitine D.500 fighter Farman F.60 Goliath transport/night bomber