 He himself left the peninsula with his wife aboard a British ship along with other members of the extended Russian royal family, after King George V was able to prevail upon the then resistant British prime minister, Lloyd George, to rescue them.After a brief stay in Italy, the Tyszkiewicz returned to their estate, Landwarów in Poland in 1919.Shortly after, the Polish–Bolshevik war broke out and Tyszkiewicz volunteered for the cavalry in the Wilno region.