Thus, with the Armistice of World War I, Italy abandoned pursuing tactics that its soldiers, pilots a. sailors had proven effective. One of those on the chopping block was the Navy's costly traditional ships but retained secret weapons underwater warfare unit for sabotage purposes. Its military weakness showed in the invasion of Ethiopia where the Italian forces stumbled their way to victory. As already observed, that weakness became evident on invading Greece whose limited forces routed the hapless Italians