During the month of June, 1918, when the battle deaths around Hill 142, Bouresches, Belleau Wood, and Vaux, of Americans attached to the Second Division amounted to 1,811 (of which at least 1,062 were Marines) and the nonfatal casualties to 7,252 more (of which 3,615 were Marines), the legislative strength of the Marine Corps was but 1,323 officers and 30,000 enlisted men; the actual strength on June 30, 1918, including reserves, was 1,424 officers and 57,298 enlisted men, and of this total about 300 officers and 14,000 enlisted men were in France. These latter figures include those Marines who suffered casualties in the battles of June, 1918. Approximately 30,000 Marines were sent overseas to join the American Expeditionary Forces, and 1,600 for naval duty ashore. During the war a great many additional Marine detachments were detailed to guard the radio stations, naval magazines, ammunition depots, warehouses, cable stations and for other naval activities, and the detachments already established were largely augmented. No call was made for additional Marines for naval purposes that was not fully met, and this is of especial interest as the Marine Corps is essentially a part of the Naval Establishment, and its first duty is to fill all naval needs and requirements. It was believed to be essential that the Marine Corps should do its full part in this war, and for that reason it was absolutely necessary that the Marines should join the Army on the western front, taking care, however, that this should not at any time interfere in the slightest degree with the filling of all naval requirements.