After the 1921 trial of Soghomon Tehlirian for the assassination of Talat Pasha, the main architect of the Armenian genocide, Ludwig wrote, "Only when a society of nations has organized itself as the protector of international order will no Armenian killer remain unpunished, because no Turkish Pasha has the right to send a nation into the desert".

As Ludwig's biographies were popular outside of Germany and were widely translated, he was one of the fortunate émigrés who had an income while living in the United States.

His interview with the founder of the Republic of Turkey appeared in Wiener Freie Presse in March 1930, addressing issues of religion and music.

At the end of the Second World War, he went to Germany as a journalist, and it is to him that we owe the retrieving of Goethe's and Schiller's coffins, which had disappeared from Weimar in 1943/44.

"[6] In a May 1948 Tempo magazine article, Ludwig theorized that Hitler could have survived by having a body double killed and cremated in his place.

His ability to combine facts with popular stories and rumors in his novel "Napoleon" makes the entire book a detailed odyssey.

[citation needed] According to Barbel Schrader, Emil Ludwig was "one of the Weimer Republic's big success stories.