Throughout this period, there were also substantial numbers of Irish officers and men in the armies or service of European powers, including the Austrian Habsburg Empire. It was not uncommon for Irish commanders of the Habsburg Empire to encounter enemy armies led by other Irishmen, Irishmen who they would have previously fought alongside in rebellions against British rule in Ireland. One such example was Peter Lacy, a field marshal in the Imperial Russian Army, whose son Franz Moritz Graf von Lacy excelled in the Austrian service. General Maximilian Ulysses Graf von Browne, the Austrian commanding officer in the Battle of Lobositz, was also of Irish descent. Recruitment for Austrian service included areas of the midlands of Ireland, and members of the Taaffe, O'Neill and Wallis families served with Austria. Count Alexander O'Nelly (O'Neill), who came from Ulster, commanded the 42nd Bohemian Infantry Regiment from 1734 to 1743. Much earlier, in 1634, during the Thirty Years' War, Irish officers led by Walter Deveraux assassinated general Albrecht von Wallenstein on the orders of the Emperor. In the 19th century, further Irish officers served in the Habsburg Empire, so Laval Graf Nugent von Westmeath and Maximilian Graf O’Donnell von Tyrconnell, who saved the life of Emperor Franz Joseph I during an assassination attempt. Gottfried von Banfield finally became the most successful Austro-Hungarian naval aeroplane pilot in the First World War.