Between 1914 and 1918, Leintrey was occupied by German troops. The houses and the church were heavily bombed, life became unbearable and the inhabitants had to flee. Only two houses were still standing at the Armistice. Just 1.5 km from the village, French troops held out in their trenches, despite heavy attacks. On 10 July 1916, the Germans blew up mines under these positions - 83 soldiers of the 162nd regiment were killed.
After the war, the village was rebuilt in 1925. The school, the town hall and the presbytery were designed by Joseph Hornecker, also known for the Grand Théâtre de Nancy.
In 1940, a new occupation followed. Liberation did not come until November 1944, after further destruction, including the church.