1915.
1. In 1915 the 30th Bavarian Reserve Division continued to occupy the same sector of the Vosges, south of the valley of the Plaine. It remained there until May, 1917. The 39th Bavarian Reserve Division was at its left, holding the lines as far as Ste. Marie aux Mines.
2. In the spring of 1915, the Brigade Ersatz Battalions of the divisions were grouped into regiments and became the 2d and 4th Bavarian Ersatz Regiments, forming the 5th Bavarian Ersatz Brigade.
3. The two Brigades of the 30th Bavarian Reserve Division took an active part in the battles of La Fontenelle in June and July, 1915.
1916.
1. Vosges sector (south of the Valley of the Plaine, Senones, Le Ban-de-Sapt).
2. In October, 1916, the 11th and 14th Bavarian Reserve Regiments went to the 1st Bavarian Landwehr Division and to the 9th Bavarian Reserve Division.
The 30th Bavarian Reserve Division received, in November, the 8th Bavarian Landwehr Regiment from the 1st Bavarian Landwehr Division, and in December the 15th Bavarian Landwehr Regiment, taken from the 39th Bavarian Division, which received the 2d Bavarian Ersatz Regiment in exchange.