From: Rabbi Mordechai Leib Winkler
To: Rabbi Natan Frankfurter
The responsum addresses a case where a Torah scholar drafted into the army is forced to write on Shabbat as part of his duties, and there is also an unlearned person (Am Ha'aretz) available for the same task; the question is who should perform the forbidden labor.
Source: Orach Chayim II §58