30th July 1919
6000 Illinois Army National Guard troops are deployed in Chicago to stop the ongoing race riot in the city.
In Dublin, the special unit the “Squad,” formed by Michael Collins (pictured), conducts its first assassination against the Royal Irish Constabulary.
As part of the Hungarian-Romanian War, Romanian troops cross over the Tisza River towards Budapest. Romanian King Ferdinand and Queen Marie overseeing the operation.
Ship Losses:
USS G-2 (United States Navy) The G-class submarine sank at her moorings, Niantic, Connecticut. 3 inspectors killed.
Toyo Maru No.2 (Japan) The cargo ship was destroyed by fire.