1915.
The 101st Division was formed in May, 1915, with the 45th Infantry (from the 2d Division), the 146th Regiment (from the 37th Division), and the 59th Regiment (from the 41st Division) all surplus regiments by reason of the reduction of divisions to three regiments. Later the 101st Division was subjected to a number of changes.
Serbia.
1. After having been part of the Army of the South, on the Bug, the 101st Division was identified on the Serbian frontier at the end of May and the beginning of June.
Galicia-Poland.
2. At the end of June it was brought back to Galicia by way of Budapest and Stry and took part in the German offensive in Galicia, in Poland. It was on the Dniester on June 30 and on the Zlota-Lipa on July 20.
It was in the neighborhood of Lublin on August 12, at Siedlce on the 29th and advanced up to a position near Brest-Litowsk.
Serbia.
3. Chosen to participate in the offensive against Serbia, it was entrained at Warsaw and went into action on the Serbian front on October 7. It was at Nish on December 9.