For further information see also here:
What was the biggest empire that never had capital punishment?1
And here: https://historum.com/threads/was-emperor-xuanzong-of-tang-the-first-monarch-to-abolish-the-death-penalty.180620/2
The SMS Geier was interned in November 1914 under Article 24 of the Convention Concerning the Rights and Duties of Neutral Powers in Naval War, which formed part of the Hague Convention of 1907. The crew were detained under the terms of the same Article, and for the duration of hostilities.
When the United States entered the war on 6 April 1917, the crew ...