[43] 1stMarDiv _SAR_, 10. The classes of supply are as follows: I, rations; II, supplies and equipment, such as normal clothing, weapons, vehicles, radios etc, for which specific allowances have been established; III, petroleum products, gasoline, oil and lubricants (POL); IV, special supplies and equipment, such as fortification and construction materials, cold weather clothing, etc, for which specific allowances have not been established; V, ammunition, pyrotechnics, explosives, etc. CHAPTER II The Wonsan Landing _ROK Army Captures Wonsan--Marine Loading and Embarkation--Two Weeks of Mine Sweeping--Operation Yo-Yo--Marine Air First at Objective--MacArthur Orders Advance to Border--Landing of 1st Marine Division_ On 6 OCTOBER 1950, after the arrival of the initial assault shipping at Inchon, General Smith ordered the 1st Marine Division to commence embarkation on the 8th. Similar instructions were issued by X Corps the following day.[44] Thus, the first troops and equipment were to be loaded even before the G-2 Section of the Landing Force could begin evaluating the enemy situation at the objective, since it was not until 8 October that the intelligence planners received X Corps’ OpnO 4, published four days earlier. Summing up the outlook at the time, G-2 later reported: [44] 1stMarDiv Embarkation Order (_EmbO_) 2-50, 6 Oct 50; Smith, _Notes_, 394. Inasmuch as subordinate units of the Division were scheduled to embark aboard ship some time prior to 15 October 1950, it was immediately obvious that preliminary intelligence planning, with its attendant problems of collection, processing, and distribution of information, and the procurement and distribution of graphic aids, would be both limited and sketchy.... Fortunately ... the section [G-2] had been previously alerted on the projected operation, and while elements of the Division were yet engaged with the enemy at Uijongbu, had requested reproductions of some 100 copies of pertinent extracts of the JANIS (75) of Korea. Thus it was ... that subordinate units would not be wholly unprepared for the coming operation.[45] [45] G-2 _SAR_, 2. JANIS is the abbreviation for Joint Army-Navy Intelligence Studies. General Smith’s OpnO 16-50, published on 10 October, climaxed the accelerated planning at Inchon. Worked out jointly by the staffs of PhibGruOne and the 1st Marine Division, this directive covered the Wonsan attack in detail and pinpointed subordinate unit responsibilities.