Air Force Times on MSN5 个月
WWII sergeant whose plane was shot down over Germany returned home
LOS ANGELES - After 80 years, a World War II sergeant killed in ... was killed in action in early 1944 when his plane was hit ...
BBC7 个月
Primary History KS2: WW2 Clips. An air-raid siren sounds the ‘all clear’
created by varying the power to the siren. The second was the all clear - a single, continuous note. After it was confirmed the skies were clear of enemy aircraft the 'all clear' would sound.