1915.
The 105th Division was formed at Thorn in May, 1915. At the outset it comprised the 122d Regiment of Fusileers obtained from the 26th Division (13th Corps District), the 21st Infantry from the 35th Division, and the 129th Infantry from the 36th Division (17th Corps District).
In 1917 the 400th replaced the 122d Regiment (Wurttemberg).
Serbia.
1. In June, 1915, the 105th Division appeared on the Serbian front at the same time as the 101st and 103d Divisions.
Galicia.
2. At the end of June it was transferred to Galicia via Budapest and Stry. It participated in the offensive against the Russians on the Gnila Lipa from June 24 to July 1, on the Zlota Lipa July 20. From Galicia it went to Poland; fought at Krasnostaw at the end of July and between Wieprz and the Jaselda until August 20. At the end of August it was on the Chtchertchev-Brest-Kobryn railway front.
Serbia and Bulgaria.
3. Chosen for the Serbian campaign, it again found itself in company with the 101st and 103d Divisions and went into line on the Serbian front in October but did not stay there long. While the 122d fusileers pushed on in the south of this country, the 21st and the 129th entrained in December for Eastern Bulgaria.