As described in Corrie Ten Boom's The Hiding Place, what was a razzia ?
The Hiding Place by Corrie Ten Boom is the moving story of a Christian family from Holland who provide shelter for Jews during World War II. Many dutch people are being sent to munitions factories in Germany to aid the German war effort so no "healthy young male" is safe. Creating secret rooms is becoming commonplace and the Ten Booms are no exception. They need to add to any existing secret places they already have. Corrie is somewhat perturbed as the best place to add one such space appears to be her bedroom as it is "an improbable, unbelievable, unpredictable impossibility!"(ch 6)
Families now live in dread that, not only are Jewish people at risk, but every young man aged from sixteen to thirty who can be rounded-up without warning. Soldiers simply arrive and surround seemingly randomly- selected buildings and blocks, forcing all the men into trucks for transport to factories. This is a razzia, a "lightning search and seizure." (ch 7)