| Show from froin arctic to antarctic vast ar army my of weather E experts work forthe the united states scales combined military operations plans are contingent on ideal weather conditions tor for all tour our participating combat sections air ground sen and amphibious weather plans for or air operations must include pre invasion conditions tor for softening up as af well is as air support or on the invasion day ground conditions will ln elude tog soil whether or not soil boll will support movel movement nent of heavy vehicular equipment air stability and wind velocity for uso use of 1 U 1 l l tl chemical warfare hur fare smoke smokescreens screens etc sea conditions must be favorable enough to permit the lar largo 90 ships to launch small craft with safety and amphibious commanders are concerned with on en shore and off shore winds and purt conditions condItI 0 3 SQ so the hermans task Is to discover conditions which will be most nearly ideal adea for all four operations operation s and how mapy daya such con conditions altion s will prevail plans can then be made accordingly by comparing the current days maps with the fingerprint finger print maps chosen by weather experts from those maps indicated by tho the card machine selection the past or most nearly like that of 0 may 15 1915 1945 is chosen it manhave may have been February 23 1929 with this map and the map for or the succeeding days in wa the weather expert can see how the high and low pressure groups moved can study other meteorological te data u iak |