Complex sentence: In 1914, she participated in the founding of "L'Union patriotique des aviatrices françaises" ("Patriotic Union of French Women Aviators") and her husband died in World War I in 1916.
Split into simpler sentences: In 1914, she participated in the founding of "L'Union patriotique des aviatrices françaises" ("Patriotic Union of French Women Aviators"). Her husband died in World War I in 1916.