Here in America the Civil War was attracting the adventurous from all parts of the world and shortly after it started, Zeppelin came over to join the Union Army as a volunteer officer and thus to add to his military education, but Zeppelin was not only the officer. He loved to roam in out of the way places and whenever opportunity afforded he organized hunting parties and went off on long sojourns in the then sparsely inhabited regions of the Mississippi Valley. Here he played the explorer and wrote letters back home dwelling on the pleasures of exploration and the possibilities in store for him who could invent something that would take one to the far and inaccessible parts of the earth. Zeppelin’s First Rigid Design His impressions gained during the American Civil War, where he had the opportunity of making captive balloon ascensions, and also in the Franco-German War where he had the opportunity of watching the numerous balloons leaving Paris during the siege, no doubt, first originated in Zeppelin’s mind the thought of developing a large rigid airship. In fact, as early as 1873 he designed a large rigid airship, sub-divided into single compartments and he emphasized the importance of such aircraft for long distance transportation in order to help in the civilization of mankind. In 1887 Zeppelin submitted a memorandum to the King of Wurttemberg in which he explained in detail the requirements of a really successful airship and stated many reasons why such airships ought to be large and of rigid construction. However, nothing of importance was actually accomplished until he resigned as a General in 1891 in order to give his full time to his invention. [PLATE 3: Zeppelin “LZ-4” Starting From the Floating Shed on a Twenty-four Hour Flight, June 1908. Count Zeppelin’s Second Floating Shed With Zeppelin “LZ-5”. Lake Constance (Bodensee) 1908.]