HISTORY.
(264th Regiment; 4th Corps District—Prussian Saxony and part of Thuringia. 266th Regiment, 9th Corps District—Grand Duchies of Mecklenberg. 34th Regiment, 2d Corps District—Pomerania.)
1915.
Eastern Prussia.
1. Organized during the winter of 1914–15, this division and the 79th Reserve Division formed the 40th Reserve Corps. The 80th Reserve Division was formed out of three field battalions of the 4th Corps District (Nos. 22–24) and six field battalions (Nos. 43–48) of the 9th Corps District. After training at the Lockstedt cantonment it was sent to Eastern Prussia at the beginning of February, 1915. There it took part in the battle of the Lakes of Masura from the 7th to the 17th.
Poland.
2. From the end of February to the beginning of March it was actively engaged in the region of the fortress of Ossoviec and took part in combats along the Polish frontier before the Russian retreat in Eastern Prussia. In March it was brought back to the frontier of Eastern Prussia and fought in the zone of the Suvalki government until July. It exchanged the 265th Regiment for the 34th Regiment.
Smorgoni.
3. At the time of the Summer offensive the division participated in the taking of Kovno (Aug. 18), fought on the Niémen (Aug. 19, Sept. 8th) and entered Vilna. It occupied the new front in the region of Smorgoni and held this sector until March, 1916.