Camouflage principles Radar-evaluatie Aerial mapping photography Gebruik van vuurkracht van de tirailleurgroep A. Warning-radar displays; B. The PPI operating Celestial navigation for fighter pilots Celestial navigation, (vier films); A-Latitude by Polaris, B--Time, C-Star Identification, D-Landfall flight T-34 Forced landing procedures Celestial navigation, solutions of illustrative problems Sperry Gyrosyn compass Excercise scrambled Sighting errors in fixed gunnery