Troop transport with American soldiers arrived at Marseille, France according to the Kriegsnachrichten No. 61 of the Chef des Admiralstabes der Marine dated 2 July 1918

An item referring to a reliable agent reported that on 24 June at Marseille, France 4 steamships with around 5,000 American soldiers in the age of 26-28 year and 3 steamships with around 600 horses and a large number of machine guns arrived. The ships were escorted by three British submarines and an American destroyer.

Source

Bundesarchiv RM-40-622