Symphonies No. 100 ("Military") and No. 104 ("London") are orchestral symphonies by Austrian composer Joseph Haydn, composed in 1794 and 1795 respectively. They exemplify Haydn's mature Classical style, with lively, clear-textured orchestration — including prominent percussion and brass effects in the "Military" symphony and expansive thematic development and grand finales in the "London" symphony — both forming part of his late-period output written during his visits to London.
