Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: After suffering from severe frostbite on the Eastern Front at the end of 1942, he served as an Offizier für wehrgeistige Führung (political officer) at the antiaircraft artillery school in Altenstadt, near Schongau.

After suffering from severe frostbite on the Eastern Front at the end of 1942, he served as a political officer at the antiaircraft artillery school in Altenstadt, near Schongau.