Tactical air power

British infantry were outgunned by German infantry with heavier machine guns and mortars, which led to a natural reluctance to advance unless artillery support was available to suppress the enemy fire. ° Fortunately, the British artillery had a reliable and robust weapon in the 25-pounder field gun, which had been ordered in 1938. On the other hand, the medium and heavy guns available in 1939-40 were modernised First World War weapons and it was only in 1942 that the production of new models enabled the British to achieve artillery superiority, and even then the range of their howitzers was often too short for effective counter-battery work. The disadvantage of earlier reliance upon older medium and heavy guns was, of course, compounded by the RAF s lack of interest in tactical air power before 1942. 

Operationally, too, the US conventional superiority, especially in air power, thwarted any tactical use of chemical weaponry and blunted the impact of all Iraqi weapons (other than the mines laid at sea). It exposed the chasm in training, doctrine, equipment and leadership between the US armed services and a military force, then popularly known as the world s... 

The use of missiles for tactical military applications has also been an area of major development since World War II. Among the first such applications were the JATO (rocket assisted takeoff) units used to provide power to boost launching of airplanes. Tactical missiles have become an important component of weaponry and include U.S. rockets such as the Navy Sidewinder and Standard Missile, the Army Hawk and Hellfire, and the Air Force Sparrow, AMRAAM, and Phoenix. 

During the World War obscuring smoke proved its tactical value on land and sea and won for itself an assured place as a military weapon, ffince the war the development of air forces has still further enhanced tin value of obscuring smoke, for not only are airplanes a means par excellence for putting down smoke screens on the field of battle, but their power of observation has greatly increased the need for obscuration. So greatly has aircraft increased the facility of obser dng enemy dispositions and... 

If conditions are held constant, the polymer yield increases with reaction time as expected, but the tacticity decreases with progressive conversion, as indicated by the decrease in crystallinity as shown in Figure 1,B. This effect can be explained from the covering on the catalytic surface diu ig polymerization. A sterically uniform arrangement of monomeric units, which doubtless is conditioned by this surface, is not possible to the same extent as at the start of the polymerization, when the free surface is exposed. After being kept for four weeks at —10° C. with exclusion of air, the alkali metal organic initiators did not lose their properties or catalytic powers. Therefore, a change in the catalyst cannot be the cause of... 

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