And if the airships were too ineffective, the early drachenflieger were either too unstable, like the German, or too light, like the Japanese, to produce immediately decisive results. Later, it is true, the Brazilians launched a flying-machine of a type and scale that was capable of dealing with an airship, but they built only three or four, they operated only in South America, and they vanished from history untraceably in the time when world-bankruptcy put a stop to all further engineering production on any considerable scale. The third peculiarity of aerial warfare was that it was at once enormously destructive and entirely indecisive. It had this unique feature, that both sides lay open to punitive attack. In all previous forms of war, both by land and sea, the losing side was speedily unable to raid its antagonist's territory and the communications. One fought on a “front,” and behind that front the winner's supplies and resources, his towns and factories and capital, the peace of his country, were secure. If the war was a naval one, you destroyed your enemy's battle fleet and then blockaded his ports, secured his coaling stations, and hunted down any stray cruisers that threatened your ports of commerce. But to blockade and watch a coastline is one thing, to blockade and watch the whole surface of a country is another, and cruisers and privateers are things that take long to make, that cannot be packed up and hidden and carried unostentatiously from point to point. In aerial war the stronger side, even supposing it destroyed the main battle fleet of the weaker, had then either to patrol and watch or destroy every possible point at which he might produce another and perhaps a novel and more deadly form of flyer. It meant darkening his air with airships. It meant building them by the thousand and making aeronauts by the hundred thousand. A small uninitated airship could be hidden in a railway shed, in a village street, in a wood; a flying machine is even less conspicuous. And in the air are no streets, no channels, no point where one can say of an antagonist, “If he wants to reach my capital he must come by here.” In the air all directions lead everywhere. Consequently it was impossible to end a war by any of the established methods. A, having outnumbered and overwhelmed B, hovers, a thousand airships strong, over his capital, threatening to bombard it unless B submits. B replies by wireless telegraphy that he is now in the act of bombarding the chief manufacturing city of A by means of three raider airships. A denounces B's raiders as pirates and so forth, bombards B's capital, and sets off to hunt down B's airships, while B, in a state of passionate emotion and heroic unconquerableness, sets to work amidst his ruins, making fresh airships and explosives for the benefit of A. The war became perforce a universal guerilla war, a war inextricably involving civilians and homes and all the apparatus of social life.